Q&A for How to Store Peeled Potatoes

If you'd like to avoid chemical preservatives, simply covering the peeled potatoes in water and in the fridge will keep them from turning brown. You wouldn't want leave them more than 2 - 3 days before cooking, though. Just an added option: change out the water daily. Soaking potatoes in water removes a lot of the starch, and that might be a consideration, depending on what you're making.

No, alum is not recommended for soaking peeled potatoes. Alum is not the safest food additive, and it is rarely used in food preservation. It is toxic in large doses.

You can keep boiled potatoes for 5 to 7 days in the fridge and they will still be good to eat.

You can store peeled, boiled potatoes for 3–5 days in the refrigerator when they are kept in an airtight container. Cool them completely before sealing to limit condensation. To reduce discoloration and odor, you can add a little vinegar or keep them submerged in plain water, changing the water daily. Discard them if you notice off smells, sliminess, or visible mold.

Yes, you can safely bake and freeze potatoes. First, fully bake or par‑bake them, then cool and wrap tightly before freezing. For fully baked potatoes, cool completely, wrap them in foil or airtight bags/containers (removing air), label, and freeze for up to 3 months. Reheat them from frozen in an oven at 350°F (175°C) for 30–45 minutes. Avoid freezing raw whole potatoes, as they become grainy. Reheat frozen potatoes only once, and discard any if they have an off smell or texture.