Part 2 of a 7 Part Series on Potatoes: Preserving Your Potatoes by Making Frozen French Fries! You can make frozen French fries with as many or as few potatoes as you like. Start by washing your potatoes and slicing them into your desired shape. I opted not to peel mine, but you can choose to peel them if you prefer. Next, bring some water to a boil. Once the water is boiling, add your potatoes and blanch them for 2 to 3 minutes, depending on their thickness. I chose to blanch mine for three min