Protect those peeled potatoes.
This process, which is called oxidation, happens because potatoes are a naturally starchy vegetable.
And when exposed to oxygen, starches turn gray, brown, or even black.

Credit:Caitlin Bensel; Food Stylist: Torie Cox
Can You Eat Brown Potatoes?
Yes, an oxidized potato is completely safe to eat.
The process doesn’t affect the flavor or texture of the vegetable.

Credit:Caitlin Bensel; Food Stylist: Torie Cox
But who wants to sit down to a bowl of graypotato salad?
Thankfully this isn’t hard to do.
Here are three simple ways to keep cut, peeled potatoes looking nice and white.
If time allows, peel and slice the potatoes right before you cook them.
This will help slow the oxidation process even more.
While this isn’t always the case, glass baking dishes and mixing bowls are a safer choice.
Can You Peel Potatoes Ahead of Time?
After a day of sitting in water, the potatoes will start to absorb more water.
That can ultimately make them very watery and gritty.
How Long Will Potatoes Last In The Fridge?
Typically, they can last up to 24 hours submerged in water.