Microwaves have become a kitchen essential, providing a quick and easy way to heat up leftovers or cook a meal from scratch. However, many people don’t realize that different food types require different microwave power levels to achieve optimal results. Choosing the right power level can be confusing, especially with so many options available. Do you use high power for everything? Is low power the way to go for delicate foods? In this article, we’ll explore microwave power levels in detail, including how they’re measured and why choosing the right level is important. We’ll also provide step-by-step guidance on which power level to use for different types of food, so you can cook with confidence.
- Understanding Microwave Power Levels
- Choosing the Right Power Level for Different Food Types
- Microwave Cooking Tips
Frequently Asked Questions
- What is the highest power level on a microwave?
- Can I use a high power level to cook all types of food?
- How can I know the right power level for a particular food?
- What happens if I cook food on too low a power level?
- Why should I cover food while cooking in the microwave?
- Is it safe to use plastic containers in the microwave?
- What is the defrost setting on a microwave used for?
- How long should I let food stand after cooking in the microwave?
- Do all microwaves have the same power levels?
- What is the difference between medium-low and defrost power levels?
Understanding Microwave Power Levels
Have you ever wondered what the different power levels on your microwave mean? Microwave power levels are an important factor to consider when cooking a variety of different foods. Understanding how they work can help you cook your food more efficiently and accurately. In this section, we will explore the basics of microwave power levels, including what they are, how they are measured, and why choosing the right power level is crucial. So, let’s dive in!
What are Microwave Power Levels?
Microwave power levels, also known as microwave intensity, determine how much energy is being emitted by the microwave and how quickly the food cooks. Every microwave has power settings that range from 1 to 10, with 1 being the lowest and 10 being the highest power setting. The higher the power level, the faster your food will cook. However, not all foods require the same power level for optimal cooking.
Microwave power levels are measured in watts. The wattage of a microwave indicates the amount of power it can produce. Most microwaves have a power output ranging from 600 to 1200 watts. A higher wattage microwave will cook food faster than a lower wattage microwave at the same power level.
Choosing the right power level is essential to achieving the desired cooking results and preventing food from being overcooked or undercooked. High power is suitable for cooking foods that require a quick cooking time, such as popcorn or frozen dinners. Medium power is ideal for cooking foods that need a longer cooking time, such as casseroles or stews. Low power is best for tasks such as softening butter and melting chocolate, as it prevents them from burning or becoming too hot.
Using the wrong power level can also result in uneven cooking and a decrease in the quality of the food. For example, using high power to cook a piece of meat may result in overcooked edges and a raw center. Using low power to cook vegetables may result in uneven cooking and a lack of tenderness.
To help you choose the right power level for your food, refer to the following table:
|Microwave Power Level||Usage|
|High Power (100% or 10)||Cooking food that requires a quick cooking time, such as bacon, popcorn or frozen dinners|
|Medium-High Power (70% or 7)||Cooking food that needs a longer cooking time, such as casseroles, stews or soups.|
|Medium Power (50% or 5)||Cooking food that needs a longer cooking time without burning, such as cakes or muffins.|
|Medium-Low Power (30% or 3)||Cooking delicate foods, such as fish, eggs or rice.|
|Low Power (10% or 1)||Softening butter, melting chocolate or defrosting food slowly and evenly.|
|Defrost (30% or 3)||Defrosting frozen food quickly and evenly|
Using the appropriate power level for your food will ensure it cooks evenly, without burning or drying out while retaining its quality, flavor and nutrients.
If you want to know more about how the power levels of microwaves can impact cooking times, check out this article on power levels and cooking times.
How are Microwave Power Levels Measured?
Microwave power levels are measured in percentage and range from 10% to 100%. The power level determines how much energy the microwave is using to cook the food. The higher the power level, the more energy the microwave is using, and the faster the food will cook.
The following table shows the percentage of power levels for a standard microwave:
|High||100% or 10|
|Medium-High||70% or 7|
|Medium||50% or 5|
|Medium-Low||30% or 3|
|Low||10% or 1|
|Defrost||30% or 3|
It’s important to note that the power level percentage may vary depending on the microwave brand and model. It’s always best to consult the microwave’s owner’s manual to ensure you are using the correct power level for the dish you are cooking.
Also, keep in mind that the power levels on a microwave are not equivalent to its wattage. The wattage of a microwave is the amount of power the microwave uses to cook food, and it typically ranges from 500 to 1,200 watts. The power levels, on the other hand, are a percentage of the microwave’s maximum power output.
If you need help determining the wattage of your microwave, check the owner’s manual or look for the label inside the microwave. Knowing the wattage can help you determine how long to cook your food for and which power setting to use.
If you’re concerned about the amount of power your microwave is using, you can also check out our article on microwave power consumption and its effect on your electricity bill.
Why is Choosing the Right Power Level Important?
Choosing the right power level is incredibly important for achieving the best cooking results in the microwave. Here are several reasons why:
- Even Cooking: Different foods require different cooking times and temperature. Choosing the right power level will help ensure that your food is cooked evenly.
- Prevent Overcooking or Undercooking: Overcooking can dry out meats and vegetables, making them tough. In contrast, undercooking can leave food raw and potentially unsafe to eat. Choosing the appropriate power level will help you avoid these problems.
- Save Time and Energy: High power levels cook food much faster than low power levels. Using the highest power level may make sense when time is of the essence. However, if you’re not in a hurry, using medium or low power can save you significant energy and money on your electricity bill.
- Maximize Flavor: Some foods, such as delicate fish or vegetables, may require cooking at a lower power level to prevent overcooking or burning. This gentle cooking approach can also help to preserve flavor and nutrients in your food.
By understanding the importance of selecting the proper power level, you can make the most of your microwave and cook delicious meals that are perfectly cooked every time. If you’re having trouble with your microwave, check out this helpful article for troubleshooting tips. Additionally, if you’re curious about how much power your microwave is consuming, learn more about microwave power consumption and its impact on your electricity bill. Before buying a new microwave, make sure to compare microwave power and find the features that best fit your needs.
Choosing the Right Power Level for Different Food Types
One of the most important factors in achieving perfectly cooked meals with a microwave is selecting the appropriate power level. Since different foods have varying properties and densities, it’s crucial to find the ideal power level to ensure that your food doesn’t become overcooked or undercooked, or even worse, dry and rubbery. In this section, we’ll explore the different power options available on microwaves and the ideal ones to use for various types of food. Whether you’re defrosting meat, reheating leftovers, or cooking something from scratch, we’ve got you covered. So read on to discover the perfect power level for each dish and how to use it effectively. And if you’re curious about how the wattage of your microwave affects your cooking experience, check out our guide on microwave power wattage and cooking foods.
High Power (100% or 10)
When it comes to cooking food in the microwave, the High Power (100% or 10) setting is the most commonly used option. This setting delivers the maximum wattage to the food, allowing it to cook quickly and efficiently.
However, it’s important to note that not all foods are meant to be cooked at high power. Foods that are dense or have a high water content may need a lower power setting to ensure they cook evenly without becoming overcooked or dried out.
Some examples of foods that can be cooked at the high power setting include:
- Cooking bacon
- Reheating leftovers
- Cooking vegetables
- Cooking potatoes
It’s important to keep a close eye on food when cooking at high power. It can be easy for food to become overcooked or even burn if left in the microwave for too long.
Using the high power setting too often can cause wear and tear on your microwave over time. If you find yourself relying on this setting frequently, it may be worth considering the benefits and drawbacks of high power microwaves, and whether a low power option could be a better fit for your kitchen.
The high power setting is a versatile option for cooking a wide variety of foods in the microwave. But it’s important to use it wisely and consider other power options when needed. For more information on adjusting your microwave’s power settings, check out our article on how to adjust microwave power settings.
Medium-High Power (70% or 7)
When you need to cook food that requires more gentle heating than high-power levels can offer, medium-high power is the way to go. Medium-high power is around 70% or 7 on most microwave ovens.
You might choose medium-high power when cooking dishes like casseroles, poultry, or fish. These foods need enough power to cook through without drying out or becoming tough.
The key to cooking successfully on medium-high power is to watch your food closely and stir it frequently. Cooking too long on medium-high power can overcook the edges or dry out the food. Be sure to check the food’s internal temperature frequently to make sure it is cooked thoroughly without getting too dry.
Another important thing to keep in mind when cooking on medium-high power is the container you use. Using a microwave-safe container that is appropriate for your dish is crucial to ensure even cooking and prevent damage to the dish or microwave.
Some microwave ovens come with presets that allow you to choose medium-high power with a touch of a button. If your microwave doesn’t have this feature, you can manually set the power level to 70% or 7 using the power level button.
Remember that it’s always a good idea to start with a lower power setting and increase the setting as needed. This will help you avoid overcooking and wasting food.
To summarize, medium-high power is a great option for cooking dishes that require gentle heating. Be sure to keep a close eye on your food and use a microwave-safe container to get the best results.
Medium Power (50% or 5)
When you need to use less power than what’s typically needed for cooking, the medium power or 50% (5 on some microwave models) setting is best to use. This setting is commonly used for foods that require slow and gentle cooking. It’s ideal for reheating leftovers, cooking casseroles, stews, and certain meats. It’s worth noting that cooking on medium power takes longer than cooking on high power, but it allows the food to cook thoroughly and evenly.
When cooking meat on medium power, keep in mind that it may take longer to cook through than on higher power levels. The internal temperature of the meat should be checked with a meat thermometer to ensure that it’s fully cooked and safe to eat. When warming up leftovers, stir the food halfway through the cooking time to ensure that it is heated evenly. This helps prevent hot spots, which can cause burns.
When cooking on medium power, it’s important to use a microwave-safe dish that won’t warp or break under the heat. Glass, plastic, and ceramic dishes are great options here. For energy-efficient cooking: heat up larger portions of food on the high power setting first and then switch to medium power to ensure the food is heated thoroughly.
It’s important to note that not all microwaves have the same wattage, so cooking times may vary depending on your microwave model. It’s always a good idea to check the manufacturer’s instructions for recommended cooking times and power settings.
As outlined earlier, choosing the right power level ensures that your food is cooked properly. But do you need a dedicated circuit for your microwave? Find out in our article on dedicated circuits for microwaves. Or if you’re interested in energy-efficient kitchen alternatives, read our article on low-power microwaves for your kitchen.
Medium-Low Power (30% or 3)
When it comes to cooking delicate foods such as fish or vegetables, using the right microwave power level is crucial to avoid overcooking. The medium-low power level, also known as 30% or 3, is the perfect option for these types of foods.
Why use Medium-Low Power?
Using medium-low power ensures that delicate foods are cooked evenly and slowly, without becoming tough or chewy. This power level is also ideal for reheating leftovers, as it prevents the food from drying out and becoming rubbery.
Examples of Foods to Cook on Medium-Low Power
|Fish||Place fish in a microwave-safe dish. Cover and cook on medium-low power until fish is flaky and tender.||4-6 minutes per 8 ounces|
|Vegetables||Place vegetables in a microwave-safe dish and add a small amount of water. Cover and cook on medium-low power until tender.||2-7 minutes depending on the type of vegetable and quantity|
|Poultry||Place chicken or turkey in a microwave-safe dish. Cover and cook on medium-low power until meat is no longer pink and juices run clear.||4-8 minutes per pound|
Tips for Cooking on Medium-Low Power
When cooking on medium-low power, it’s important to keep these tips in mind:
– Use a microwave-safe dish with a lid to trap steam and prevent the food from drying out.
– Add a small amount of liquid such as water, broth, or oil to prevent the food from becoming dry.
– Stir or turn the food halfway through cooking to ensure even heating.
– Always use a food thermometer to check that the internal temperature of meat reaches at least 165°F (74°C).
– Let the food stand for a few minutes after cooking to allow the heat to distribute evenly and prevent hot spots.
By using the medium-low power level, you can ensure that delicate foods are cooked to perfection without the risk of overcooking. Keep these tips in mind and experiment with different foods to find the best cooking time for your microwave.
Low Power (10% or 1)
Microwaving with low power is ideal when you want to gently warm or slightly soften your food. It’s also the perfect option for cooking delicate foods that can easily overcook or dry out, such as fish and vegetables. At low power, the microwave emits 10% or 1 watt of power, allowing the heat to distribute through the food slowly and evenly.
Food Types Suitable for Low Power Cooking
Here are some food types that are suitable for cooking at low power:
|Food Type||Reason for Using Low Power|
|Fish||Low power helps retain moisture and prevents overcooking.|
|Vegetables||Low power allows for even cooking and prevents over-softening or browning.|
|Poultry||Low power helps keep moisture in and prevents drying out or overcooking.|
|Eggs||Low power helps prevent the eggs from exploding or drying out.|
Tips for Cooking on Low Power
When cooking on low power, it’s important to keep these tips in mind:
– Slice or dice your food into smaller pieces to promote even cooking.
– Cover your food with microwave-safe plastic wrap or a microwave-safe lid to prevent splatters.
– Stir your food halfway through the cooking time to promote even cooking.
– Check your food frequently to avoid overcooking, as low power cooking can take longer than cooking on higher power levels.
– Let your food rest for a few minutes after cooking to allow for even distribution of heat and prevent hot spots.
By following these tips and using the appropriate power level for different food types, you can make the most out of your microwave and create delicious and evenly cooked meals every time.
Defrost (30% or 3)
When it comes to defrosting food in the microwave, it’s important to choose the right power level in order to avoid partially cooking the food. The defrost power level on most microwaves is typically set to 30% or 3, which is a low enough power level to slowly and evenly defrost the food without partially cooking it.
How to defrost food in the microwave:
- Remove the food from its packaging and place it in a microwave-safe dish.
- Set the microwave to the defrost power level (30% or 3) and set the timer for the appropriate amount of time based on the food type and weight.
- If the microwave has a defrost setting, use it. If not, manually set the microwave to the appropriate power level and defrost time.
- Stop the microwave every few minutes to flip or rotate the food for even defrosting.
- Once the food is fully defrosted, remove it from the microwave and either cook immediately or transfer to the refrigerator for later use.
It’s important to note that defrosting in the microwave should only be used for immediate cooking. If you’re not planning on cooking the food right away, it’s best to defrost it in the refrigerator to ensure food safety.
Choosing the right power level for defrosting food in the microwave is crucial in achieving the best results. By using the defrost power level and following these steps, you can safely and effectively defrost your food while maintaining its quality and freshness.
Microwave Cooking Tips
So, you’ve got all the knowledge on microwave power levels and you’re ready to start cooking with your trusty microwave. But before you dive into the kitchen, let’s talk about some handy microwave cooking tips to help you make the most out of your appliance. These tips will not only make your food taste better, but they will also ensure that your microwave is working efficiently and safely. From stirring and flipping to using the right containers, let’s explore the nuances of microwave cooking!
Stirring and Flipping
When cooking in a microwave, it’s important to stir and flip your food regularly to ensure even cooking. Here are some tips on how to do it right:
- Use microwave-safe utensils: Choose utensils that are safe to use in the microwave when stirring or flipping your food. Avoid using metal or aluminum utensils, as they can cause damage to the microwave.
- Stirring: When cooking a sauce or a liquid-based dish, stir it every few minutes to ensure that the heat is distributed evenly. This will prevent any hot spots and ensure the dish cooks evenly. Remember to use a microwave-safe spoon or spatula.
- Flipping: When cooking a solid dish, like a piece of meat or vegetable, flip it over halfway through the cooking process. This will ensure that both sides cook evenly and that you don’t end up with a burnt spot on one side. Use a microwave-safe pair of tongs to flip over your food.
- Breaking up: If you’re cooking food that has a tendency to clump together, like frozen vegetables or minced meat, break it up with a fork or spoon halfway through cooking. This will ensure that all parts are cooked evenly and that there are no cold spots.
By taking the time to stir and flip your food at regular intervals, you can ensure that your food is cooked evenly and is safe to eat. Remember to always use microwave-safe utensils and keep a close eye on your food while it cooks.
When it comes to cooking food in the microwave, covering it is an important factor to consider. Covering food helps it cook more evenly and prevents moisture from evaporating too quickly. Here are a few things to keep in mind when covering food in the microwave:
|Food Type||Covering Method|
|Soups and Sauces||Loosely cover with a lid or microwave-safe plastic wrap to prevent splatters and retain moisture.|
|Vegetables||Add a small amount of water and tightly cover with microwave-safe plastic wrap or a lid to allow the vegetables to steam.|
|Meat||Loosely cover with wax paper or parchment paper to prevent the meat from splattering while allowing steam to escape. Some cuts of meat may also benefit from marinating before cooking.|
|Baked Goods||Use a microwave-safe cover or wax paper to prevent moisture loss and maintain texture. Be sure to leave a small vent or opening for steam to escape.|
Remember to use microwave-safe materials when covering food, such as plastic wrap labeled for microwave use and microwave-safe glass or ceramic lids. Avoid using plastic wrap that is not labeled for microwave use, as it may melt or release harmful chemicals. When in doubt, use a microwave-safe plate or lid instead.
By covering your food appropriately in the microwave, you can help ensure that it cooks thoroughly, evenly, and retains its moisture and flavor.
After cooking food in a microwave, it is essential to let it stand for a few minutes before serving or eating it. Standing time is the time that food is left in the microwave after it stops cooking. This time is vital because it allows the food to continue to cook and reach an even temperature. Standing time also permits the food to absorb the cooking liquids, which enhances the flavor and texture of the dish.
The length of the standing time varies depending on the food type and the recipe. Some dishes may require a more extended standing time compared to others. The standing time can range from as little as 30 seconds to as long as 10 minutes. It’s worth following the recipe guidelines as this will ensure that the food is cooked thoroughly and evenly.
Here’s a table showing some popular food types and their recommended standing time:
|Food Type||Standing Time|
|Frozen Vegetables||1-2 minutes|
|Beef, Pork, or Lamb||3-5 minutes|
|Pasta and Rice Dishes||3-5 minutes|
|Soup and Stews||2-3 minutes|
It’s important to note that the food should be covered during the standing time to prevent drying out. Cover the dish with a microwave-safe lid or plastic wrap, leaving a small vent for steam. This will ensure that the food continues to cook and stays warm.
Perplexity Tip: Keep in mind that the amount of standing time required also depends on the wattage of your microwave oven. If you have a high-powered microwave oven (1000 watts or more), you may need to reduce the recommended standing time. Conversely, if your oven is low-powered (less than 600 watts), you may need to increase the standing time. Make sure to make adjustments to the standing time as needed, until the food is cooked thoroughly and reaches the desired temperature.
When it comes to arranging food in the microwave, there are a few things to keep in mind to ensure even cooking and prevent hot spots. Here are some tips and tricks:
- Arrange food evenly: Make sure the food is spread out evenly on the plate or dish to prevent certain areas from cooking faster than others. This is especially important for larger items, such as whole potatoes or chicken breasts.
- Place thicker parts towards the outside: If you are cooking something that is thicker on one end, such as a chicken thigh, place that end towards the outside of the plate or dish. This will help it cook more evenly.
- Separate pieces of food: If you are cooking multiple pieces of food, such as chicken nuggets or vegetables, be sure to separate them so they are not touching each other. This will ensure that each piece cooks evenly.
- Use a microwave-safe cover: Covering your food with a microwave-safe lid or plastic wrap will help trap in heat and moisture, which can help it cook more evenly. Just be sure to leave a small vent to let steam escape.
- Rotate the dish: If your microwave does not have a turntable, be sure to rotate the dish halfway through cooking to ensure even cooking. You can also flip items over to ensure both sides cook evenly.
Properly arranging your food in the microwave can make a big difference in the end result. By following these tips, you can ensure that your food is not only cooked evenly, but also comes out tasting its best.
Using Microwave-Safe Containers
When it comes to choosing a container for your microwave, safety should always be your top priority. Here are some tips on using microwave-safe containers:
- Use containers labeled “microwave-safe”: Look for containers that specifically state they are safe for use in the microwave. Avoid using plastic containers that are not labeled or do not have any information on whether they can be used in the microwave or not. These containers may release harmful chemicals when heated.
- Avoid metal containers: Metal containers can cause sparks and even start a fire in the microwave. Always use microwave-safe materials such as glass, ceramic, or microwave-safe plastic.
- Check the container for cracks or damage: Do not use containers that are cracked, chipped, or have any other visible damage. These containers can break or release harmful chemicals when heated in the microwave.
- Avoid plastic wrap or any covers that aren’t microwave-safe: Plastic wrap can melt and release harmful chemicals when heated. Always use microwave-safe covers such as microwave-safe lids, paper towels, or wax paper.
- Use caution when removing containers from the microwave: Remember that the container will be hot after it is heated in the microwave. Use oven mitts or pot holders to safely remove the container from the microwave and avoid burns.
By following these tips and using only microwave-safe containers, you can ensure that your food is heated safely and without any harmful effects. Always prioritize safety and never hesitate to double-check the safety of your containers before using them in the microwave.
When using a microwave, it’s important to watch the food closely to ensure that it doesn’t overcook or burn. Every microwave is different, so it’s important to monitor the progress to make sure that the food is cooking evenly.
One way to do this is to set the microwave for a shorter amount of time than the recipe calls for and then check the food’s progress. Keep in mind that the food will continue to cook even after the microwave stops, so it’s important to take it out before it’s fully cooked.
Another tip is to use a microwave-safe cover or lid to prevent splatter and allow the steam to circulate around the food. This will help the food cook more evenly and prevent it from drying out.
You can also use a turntable or rotate the food manually to ensure that it cooks evenly on all sides. If you’re cooking multiple items, arrange them in a single layer and make sure that there is space between them to allow the microwave to cook them properly.
It’s important to use microwave-safe containers and avoid using metal or plastic containers that could melt or release harmful chemicals. Glass, ceramic, and some plastics labeled “microwave-safe” are safe to use in the microwave.
Finally, start with the lowest power level and gradually increase it as needed to avoid overcooking the food. Remember that the power level may need to be adjusted based on the amount and type of food being cooked.
By following these microwave cooking tips and watching the food closely, you can cook delicious meals quickly and easily while ensuring that they are cooked evenly and safely.
|Watch closely||Monitor the food’s progress to ensure it doesn’t overcook or burn|
|Use a cover or lid||Prevents splatter and allows steam to circulate, cooking the food more evenly and preventing it from drying out|
|Rotate food||Use a turntable or manually rotate the food to ensure even cooking|
|Use microwave-safe containers||Avoid using metal or plastic containers that could melt or release harmful chemicals|
|Start with the lowest power level||Gradually increase the power level as needed to avoid overcooking the food|
After reading this article, you should now have a better understanding of the importance of choosing the right power level when cooking different types of food in your microwave. By adjusting the power level, you can ensure that your food is cooked evenly and thoroughly, without the risk of overcooking or undercooking.
Remember that high power is best for foods that cook quickly, such as vegetables and small cuts of meat. Medium-high power is ideal for foods that require a little more time, like poultry and larger cuts of meat. Medium power is great for delicate foods like fish and eggs, while medium-low power is best for stews and casseroles.
Low power is perfect for keeping food warm or gently melting chocolate, while the defrost setting is a must-have for thawing frozen food quickly and safely. And don’t forget to use the appropriate microwave-safe container for each food, cover it if necessary, and stir or flip it occasionally to ensure even cooking.
In conclusion, understanding how to choose the right microwave power level for different food types is essential for achieving delicious and perfectly cooked meals every time you use your microwave. So next time you’re ready to heat up a quick meal, keep these tips in mind and experiment with the different power levels to achieve the best results.
Frequently Asked Questions
What is the highest power level on a microwave?
The highest power level on a typical microwave is 100%, also referred to as 10.
Can I use a high power level to cook all types of food?
No, high power is best suited for foods that cook quickly and require high heat, such as vegetables, meat, and poultry.
How can I know the right power level for a particular food?
You should refer to the food’s packaging instructions or consult a microwave cooking guide for recommended power levels.
What happens if I cook food on too low a power level?
If you cook food on too low a power level, it will take longer to cook and may not heat evenly, resulting in unevenly cooked food and a loss of texture and flavor.
Why should I cover food while cooking in the microwave?
Covering food while cooking in the microwave helps retain moisture, prevent splattering, and reduce cooking time.
Is it safe to use plastic containers in the microwave?
Only use microwave-safe containers in the microwave to avoid the risk of plastic melting, releasing harmful chemicals, and posing a risk to your health.
What is the defrost setting on a microwave used for?
The defrost setting on a microwave is used to slowly thaw frozen foods without cooking them and is best used for meat, poultry, and fish.
How long should I let food stand after cooking in the microwave?
You should let food stand for a few minutes after cooking in the microwave to allow it to finish cooking, cool down, and allow flavors to meld together.
Do all microwaves have the same power levels?
No, microwave power levels can vary depending on the make and model of the microwave, and it’s important to consult the specific microwave’s user manual for power level settings.
What is the difference between medium-low and defrost power levels?
The medium-low power level is used to gently cook foods that require lower heat, whereas the defrost power level is used to thaw frozen foods without cooking them.