NO! This is the wrong way to do it and is not food safe. Cooked starch foods like potatoes can grow germs if not kept either refrigerated and cold or hot over 140º F.
Simply parboil your potatoes, wrap them in an airtight container, and place them in the fridge as you would any leftovers. When you're ready to finish cooking them, you're ready to go with delicious potatoes every time that will cook much faster than if you started from scratch.
Cooked potatoes and other cooked vegetables can be safely kept in the refrigerator 3 to 4 days.
A: Once cooked (whole or cut) potatoes can be stored in water (with or without vinegar) without becoming discolored or mushy. But, water storage isn't necessary. Refrigerate the boiled potatoes in a sealed container and use within a couple of days.
Refrigerated: You can refrigerate your boiled potatoes for between 3-5 days in an airtight container. Wait for your boiled potatoes to cool down (no more than 2 hours) and place them in an airtight container or bag before refrigerating.
You can do nearly everything — boil, peel, and mash; stir in milk and salt — up to two days ahead. Before serving, reheat. Adding butter at the last minute makes them taste freshly mashed.
Instead, simmer the potatoes until the tip of a small, sharp knife goes in easily. Then drain most of the water out of the pan. Keep about a quarter-inch in the pot and leave it—and the potatoes—at room temperature with the lid on. They can sit for an hour, or two, like this, Foster says.
Do cooked potatoes go brown? No. Once the starch is cooked, the potato won't go brown even if it is exposed to air for a while.
Don't soak cut potatoes longer than overnight.
If keeping potatoes in water for more than an hour, refrigerate. However, don't soak them any longer than overnight—after that, the potatoes start to lose their structure and flavor.
Soak them in water
The best (and most popular) way to keep cut potatoes from turning brown is to completely submerge them in a bowl of water. Store the water-covered potatoes in a bowl in the refrigerator until you're ready to use them, up to one day in advance.
“When these are stored in the fridge, the starch in the potato is converted to sugar. When baked or fried, these sugars combine with the amino acid asparagine and produce the chemical acrylamide, which is thought to be harmful.”
'Drain the boiled potatoes really well and leave them for a good long while afterwards to sit and cool. If you want to get ahead, why not boil them in advance, then toss in a little oil and store in the fridge until you're ready to roast them.
Peel potatoes using a vegetable peeler. It's best to leave them whole, but you can go ahead and cube or dice them if you want — just don't slice them too thin. Fill a bowl with cool water, submerge the potatoes, then cover with plastic wrap. Store in the refrigerator overnight.
Did you know that it is possible to cook mashed potatoes and put them in the refrigerator? The next day, you will just need to warm them up (adding a tiny bit of milk is a good idea) and use the masher or fork again so that they look good before serving.
Placing spuds in water will slow the oxidation process, but it will not stop it. To keep keep potatoes from turning brown for more than six hours, say overnight, then add a bit of acid. Lowering the pH of the potato helps fight off oxidation.
No matter which way you slice (er, peel?) it. The short answer is yes. You can absolutely peel potatoes ahead of time.
Just be sure to store peeled potatoes in water for no more than 24 hours. After that, the cool refrigerator air will convert the starches in the potatoes to sugar, causing the flavor and texture of the spuds to change. Instead, just start cooking potatoes for a mash, potato salad, or hash browns.
Q: After boiling potatoes, how can I keep them from turning brown overnight so I can make potato salad the next day? A: Place the potatoes in water to cover and add some acidity like a teaspoon of concentrated lemon juice or white wine vinegar to keep from browning.
After you remove potatoes from the cooking water, ferri-chlorogenic acid slowly mixes with oxygen, creating a color that can range from gray to black to purple to bluish. The color change is gradual.
For most potato dishes it's important to add the potatoes to cold water and allow the water to come to a boil with the potatoes in the water. The potato starch can react as soon as it comes in contact with hot water, which will promote uneven cooking and mealy potatoes.
It's important to drain the potatoes immediately after cooking. Don't leave them to sit in the liquid while you finish preparing the rest of the meal. Potatoes retain their heat quite well, so putting them back in the pot after draining and putting a lid on them will keep them warm until you're ready to serve.
You can store peeled potatoes in water in the refrigerator for about 24 hours. Peeled potatoes left out by themselves at room temperature, on a refrigerator shelf or wrapped in foil or plastic wrap will still get dark overnight, so submerge them in a bowl of water, cover and refrigerate.
Transfer the mashed potatoes to a large microwave-safe bowl and cover tightly with plastic wrap. Refrigerate for up to 2 days. To reheat, poke lots of holes in the plastic wrap with the tip of a knife and microwave at medium-high (75 percent) power for about 14 minutes.
There are many ways restaurants keep mashed potatoes warm and ready to serve. Aside from using a slow cooker, they use a warming drawer, insulated containers, crock pot, and the covered double broiler method.
Prep your veg the night before
Peel potatoes, carrots, parsnips and any other veg you're having and leave them in pans of cold water overnight. This will save you a lot of faff and additional mess on Christmas morning.