Why do french fries taste bad after been in the fridge?

There are several reasons why French fries taste bad after being in the fridge.

1. Starch retrogradation. When French fries are cooked, the starch in the potatoes gelatinizes, meaning that it absorbs water and swells up. This gives French fries their characteristic soft and fluffy texture. However, when French fries are cooled and refrigerated, the starch retrogrades, meaning that it re-crystallizes and becomes hard and waxy. This is what causes French fries to become tough and chewy after being in the fridge.

2. Loss of moisture. When French fries are refrigerated, they lose moisture through evaporation. This can further contribute to their tough and chewy texture.

3. Oxidation. When French fries are exposed to air, they can oxidize, which can cause them to develop a rancid flavor. This is especially true for fries that have been fried in oil that is not fresh.

To prevent French fries from tasting bad after being in the fridge, you can try the following tips:

* Store French fries in an airtight container. This will help to prevent them from losing moisture and becoming tough.

* Do not store French fries for more than a few days. The sooner you eat them, the better they will taste.

* If you do have to store French fries for a few days, reheat them in a toaster oven or air fryer before eating them. This will help to crisp them up and improve their flavor.