Have you ever been in a rush, popped something into the microwave, and then heard a strange noise or smelled something burning? We’ve all been there, right? Microwaving food is so convenient, but not everything should go in there. Some items could end up making your food taste bad, or worse, cause a mess or even a fire! In this post, we’ll talk about 20 everyday things you should never put in your microwave—some of them might surprise you. Let’s dive in and save you from some microwave disasters!
20 Items You Should Never Microwave
When you think about your microwave, you probably picture it as a safe, go-to place for reheating leftovers, cooking quick meals, or even making popcorn. But did you know that microwaving some things can lead to disastrous outcomes? From potential fires to harmful fumes, some common items should absolutely be avoided. Let’s explore the items that you should never microwave, so you can microwave safely without worrying about any surprises!
1. Aluminum Foil
Aluminum foil is one of the most dangerous things to put in the microwave. It can cause a huge spark and potentially start a fire. The microwave uses electromagnetic waves that bounce off metal, which creates electric arcs. If you put a piece of foil inside, it can quickly heat up and cause sparks or even start a fire. So, don’t risk it! Stick to microwave-safe containers and avoid using foil at all costs. It’s easy to forget sometimes, especially when you want to cover your food, but make sure to use a microwave-safe lid or paper towel instead.
2. Metal Containers
Similar to aluminum foil, any type of metal container can cause major problems in the microwave. The microwaves bounce off the metal surfaces, causing heat build-up and leading to dangerous sparks or even fires. If your food comes in a metal container, transfer it to a microwave-safe dish before heating. Don’t microwave cans, metal trays, or anything with a metal lining—your microwave (and kitchen) will thank you!
3. Eggs in Their Shell
You might think microwaving an egg would be a quick way to cook it, but that’s a big no-no. Eggs in their shells can explode when microwaved due to the rapid buildup of steam inside. The steam doesn’t have anywhere to escape, which causes the egg to crack or burst open. So, if you’re in the mood for eggs, crack them into a microwave-safe bowl first and be sure to cover the bowl with a microwave-safe lid or wrap.
4. Styrofoam Containers
Styrofoam, the material many takeout containers are made of, is another item that shouldn’t be microwaved. When heated, Styrofoam can melt and release toxic chemicals into your food. Some Styrofoam containers are labeled as “microwave-safe,” but it’s better to play it safe and transfer your food to a glass or ceramic dish before heating. Microwaving Styrofoam may seem like a time-saver, but it’s simply not worth the health risk!
5. Hot Peppers
It might sound strange, but microwaving hot peppers can be dangerous. The heat can cause the capsaicin (the chemical that makes them spicy) to be released into the air, and if you inhale it, it can irritate your nose, throat, and eyes. Microwaving peppers can make the air in your kitchen so spicy that it’ll have you coughing and even cause discomfort. If you need to microwave peppers, cut them up and place them in a microwave-safe bowl with a lid.
6. Grapes
Grapes are another surprisingly dangerous food for the microwave. When microwaved, they can heat up and turn into superheated liquid that might explode. If you microwave two grapes close together, the electrical fields can make them spark, which can cause a fire. It may sound strange, but it’s best to avoid microwaving grapes altogether. They are much better enjoyed fresh or in the oven if you’re looking to bake them.
7. Takeout Containers with Plastic Lids
Many takeout containers have plastic lids that are not microwave-safe. If you microwave them, they can melt or warp, causing a mess or even releasing harmful chemicals into your food. The best way to handle takeout is to transfer it to a microwave-safe dish and use a microwave-safe lid or wrap to cover it. It’s worth taking the extra step to avoid dealing with a melted lid!
8. Travel Mugs
While many travel mugs are great for keeping your drink warm, most of them aren’t microwave-safe. Travel mugs often have metal parts like lids or insulations that can spark in the microwave, causing damage or even fires. If you want to warm up your coffee or tea, pour it into a microwave-safe cup first. It’s much safer than risking a microwave mishap with your favorite travel mug.
9. Bread
You might think microwaving bread is an easy way to warm it up, but it can quickly become chewy and rubbery instead of soft and fluffy. Microwaving bread changes its texture, and it can even dry out in the process. If you want to warm bread, it’s best to toast it or heat it in the oven. Your bread will taste much better and maintain its texture, making it worth the extra effort.
10. Tomatoes
Tomatoes, especially whole ones, don’t do well in the microwave. The heat can cause them to burst, spilling juice everywhere and potentially causing a mess. If you want to heat up tomatoes, chop them up and microwave them in a microwave-safe dish. Otherwise, consider using other methods like stovetop cooking to avoid a splattered kitchen.
11. Water in Plastic Bottles
Although it might seem convenient to microwave water in a plastic bottle, it’s dangerous. The plastic can warp or release harmful chemicals when heated. Plus, water heated this way can become superheated and suddenly bubble over when you remove the bottle. It’s safer to pour the water into a microwave-safe container before heating it.
12. Frozen Meat
While microwaving frozen meat may seem like a quick way to defrost it, it’s actually not the safest method. The microwave heats unevenly, and you could end up with parts of the meat being cooked while others are still frozen. This can also lead to foodborne illnesses if the meat isn’t cooked properly. It’s better to defrost frozen meat in the refrigerator or use the microwave’s defrost setting to avoid any risks.
13. Plastic Wrap
While some plastic wraps are labeled as microwave-safe, not all of them are. The plastic wrap can melt, releasing harmful chemicals into your food. Always make sure the plastic wrap you use is labeled microwave-safe, or better yet, consider using wax paper or a microwave-safe cover instead. Keeping your food safe from toxins is always worth the extra effort!
14. Mushrooms
Mushrooms, when microwaved, release a lot of water, and this can lead to a soggy mess. The microwave’s heat doesn’t allow the water to evaporate quickly enough, and the mushrooms can end up shriveled and watery. For better texture and flavor, it’s better to cook mushrooms on the stove. That way, you’ll have more control over the cooking process and the end result!
15. Chicken Wings with Sauce
If you’re thinking about reheating leftover chicken wings in the microwave, beware! The sauce can splatter all over the microwave, making a huge mess. Additionally, the microwave doesn’t heat evenly, and your wings may end up overcooked on the outside and undercooked in the middle. Use an oven or stovetop to reheat wings for the best results.
16. Piping Hot Pasta
Pasta, when microwaved, doesn’t always heat up evenly. The noodles can become soft and mushy, and the sauce might dry out. Plus, pasta heated in a microwave can become sticky and lose its texture. The best way to reheat pasta is on the stovetop in a pan with a little extra sauce or water. You’ll be glad you did!
17. Popcorn Bags without a Microwave-Safe Label
Not all popcorn bags are made to go in the microwave. If you’re using a bag that doesn’t have a microwave-safe label, you could risk overheating or even causing a fire. Make sure to check the bag before popping it into the microwave to avoid accidents. Using microwave-safe popcorn bags ensures that the popcorn will pop perfectly without any risk.
18. Seafood
Seafood, especially shellfish, doesn’t always heat well in the microwave. It can become rubbery or dry, and in some cases, it can even release a strong, unpleasant smell. If you want to reheat seafood, consider using the stovetop or oven to get the best texture and flavor.
19. Chips and Crackers
Chips and crackers are best when crispy, but microwaving them can turn them soggy and soft. The microwave doesn’t allow them to crisp up properly, so they lose that satisfying crunch. If you want to warm up chips or crackers, it’s better to use a toaster oven or even an oven to restore their crispy texture.
20. Milk in a Plastic Bottle
Heating milk in a plastic bottle is a big no-no. The plastic can warp and release harmful chemicals when microwaved, affecting the taste and quality of the milk. It’s best to pour milk into a microwave-safe glass or ceramic container before heating. That way, you can warm up your milk safely without worrying about plastic leaching into it.
By now, you’ve learned about 20 everyday items you should never microwave. From aluminum foil to plastic wraps, these common items can cause dangerous sparks, unpleasant smells, or even fires. By following these guidelines, you’ll be able to microwave safely and keep your kitchen—and yourself—safe. Remember to always double-check before putting something in the microwave, and when in doubt, use a microwave-safe dish to prevent any mishaps. Your microwave and your health will thank you for it!
Frequently Asked Questions
Is it safe to microwave paper towels?
No, you should avoid microwaving paper towels that contain any ink, dyes, or non-microwave-safe materials. Always make sure the paper towel is plain and designed for microwave use.
Can you microwave plastic containers?
Only if the plastic container is labeled as microwave-safe. Some plastics can warp or leach harmful chemicals when heated.
Do I need to worry about microwaving leftovers in plastic containers?
Yes, always check the label on plastic containers to ensure they are microwave-safe. Otherwise, transfer your leftovers to a glass or ceramic container before reheating.
Is it okay to microwave frozen vegetables in the bag?
It depends. Some frozen veggie bags are microwave-safe, but you should check the packaging for microwave instructions to ensure safety.
Can you microwave a whole potato?
Yes, you can microwave a whole potato, but it’s better to poke holes in it to let steam escape and prevent it from bursting.
Do I need to cover food in the microwave?
It’s a good idea to cover your food with a microwave-safe lid or paper towel to prevent splatters and keep moisture in.
Is it okay to microwave food in a plastic bag?
Plastic bags that are labeled microwave-safe can be used, but it’s best to avoid using non-microwave-safe plastic bags in the microwave.
Can you microwave a sandwich?
Yes, but be careful! It’s best to microwave the sandwich with the bread wrapped in a paper towel to keep it from getting too soggy.
