Potatoes can add substance and flavor to any meal. But after they're cooked, it's important to keep in mind that the structure of the starch can cause potatoes to undergo undesirable changes in taste. Follow these simple steps to ensure that your cooked potatoes stay fresh and edible for several days.
Let the cooked potatoes cool down. Make sure they're covered during this time.
Put the cooked potatoes in a plastic container or resealable plastic bag. You may also leave them in the dish or pot you cooked them in if you're using aluminum foil or plastic wrap to cover them.
Place the potatoes in the refrigerator overnight. They'll typically stay good for at least two to three days without a significant change in taste. They may last longer but it's best to eat them within a few days after being put in the refrigerator.
Cooked potatoes can be safely left out uncovered for about two to four hours before bacteria becomes a factor, but it's still best to cover them when cooling.
Boiled potatoes can be kept in the water they were cooked in while refrigerated. Cover the pot to let it cool down, then put it in the fridge.