Throw them in a pot or large bowl and cover them with cold water, then let them soak for at least two or three hours. Soaking the sliced potatoes is the fundamental first step of making proper french fries.
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Soaking peeled, washed and cut fries in cold water overnight removes excess potato starch, which prevents fries from sticking together and helps achieve maximum crispness.
Also, are you supposed to Soak potatoes in water? Rinsing or soaking cut raw potatoes helps to wash away a very small amount of amylose. (If you decide to try soaking the raw potatoes anyway, they can be soaked in water in the refrigerator for several hours without any safety concerns. Potatoes can be soaked even overnight as long as they are in the refrigerator.)
Accordingly, how long can you Soak potatoes in water before cooking?
How long do you soak potatoes to remove starch?
Soak raw potatoes in a container for up to four hours. The potatoes should be fully submerged to prevent oxidation and discoloration. After four hours, the potatoes should be rinsed with cold water. Chopping, cutting or otherwise slicing the potatoes will excrete more starch.