Despite its speed and versatility, though, there are some things a microwave can’t do.

9. Eggs in Their Shell

Shel-on eggs, when microwaved, can explode due to the moisture inside being heated to the boiling point and steam building 

8. Alcoholic Beverage

Alcohol molecules are volatile and can ignite when exposed to the electromagnetic waves in the appliance. 

7. Frozen Meat

Microwaves cook food from the inside out and to get the center of the meat cooked to a safe temperature will result in the exterior of the meat being tough, dry, and leathery 

6. Breaded or Fried Leftover

Air-fried, oven-fried, and deep-fried leftovers do not reheat well in the microwave 

5. Grape

grapes can spark when heated in the microwave 

4. Raw Hot Pepper

These contain a compound called capsaicin, which is what makes them spicy. When heated, the capsaicin turns into vapor and these fumes can be quite irritating when inhaled or in contact with your eyes 

3. Anything That's Expired

This one holds true regardless of the appliance 

2. Food IN Aluminum foil 

Certain materials don’t play nicely with the appliance due to the way it uses very short, high-frequency radio waves to heat. 

1. Uncovered Pasta Sauce

If warmed uncovered, they can spit and splatter all over the appliance