10 Common Foods You Should Never Reheat and Why

Not every food is meant to be reheated and consumed. Here are 10 of those foods, why you should not give a second go in the oven, on the stove or in the microwave.


Chicken can cause several digestive problems if you reheat it after a day or two.

2. Spinach

If reheated, spinach nitrates can convert into nitrites and other carcinogens.

3. Eggs

Reheating eggs can cause them to become toxic and wreak havoc in your digestive system.

4. Mushrooms

This food should be ideally consumed the same day due to their complex protein composition.

5. Rice

Reheating rice and eating can give you food poisoning because of the spores of bacteria present in rice which are still present even after reheating.

6. Oils

Oils such as grape seed, walnut, avocado, hazelnut and flaxseed have very low smoke points. So, when you reheat them, they become rancid.

7. Beets

Beets are rich in nitrates, just like spinach. Reheating beets can cause a lot of trouble, so it’s best to eat them cold if there are any leftovers.

8. Butter Lettuce

This green leafy vegetable is best when eaten raw. Cook it if you must, but never reheat butter lettuce, as the high amount of nitrates can cause food poisoning.

9. Potatoes

Potatoes are nutritious, but they lose their nutritional value if you let them stand at room temperature for long. They can become toxic and cause illnesses, such as food poisoning.

10. Celery

Celery, with its high nitrate content can become toxic if you heat it the second time.

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