Peeled and cut potatoes brown quickly as their starch oxidizes upon exposure to air.
This makes them unappetizing, though they're still perfectly safe and edible—no toxins involved.
With years of home cooking experience, I've relied on a reliable grandmother's remedy to keep them fresh and white: store them in cold water. Here's how it works.
- Salad bowl
- Cold water
1. Fill the bowl with cold water.
2. Submerge the peeled potatoes in it.
3. Place the bowl in the fridge.
And there you have it! Your potatoes stay vibrant yellow and fresh, without any blackening. :-)
Quick, easy, and highly effective. This method extends their fridge life by 2 to 3 days. You can even cut them into pieces first—they'll remain perfect even after 3 days.
For even longer storage, add a few drops of white vinegar to the water. Lemon juice or a pinch of salt works too.
Potatoes contain starch that oxidizes when exposed to air after peeling, causing blackening.
Cold water blocks this air contact, preventing oxidation and keeping them fresh.
