How long should all cut potatoes be submerged in cold water?

Submerging cut potatoes in cold water for 15 minutes is ideal for several reasons. This soaking period helps to remove excess starch from the potatoes, which can prevent them from becoming gummy during cooking. By reducing the starch content, it also contributes to achieving a crispier texture once the potatoes are fried.

Additionally, keeping the cut potatoes in cold water can help maintain their color and prevent browning due to oxidation. The brief period of 15 minutes strikes a good balance, allowing the potatoes to soak enough to yield these benefits without risking water absorption, which can lead to sogginess during frying.

This preparation step is crucial in ensuring high-quality fries that are both crispy on the outside and tender on the inside, which is essential for a successful outcome in a fast-casual dining establishment like Five Guys.