How to Cut Fries. Lay each half cut-side down. Slice lengthwise into 1/4 to 1/2 inch thick slices. Stack about half of the slices and cut lengthwise into 1/4 to 1/2 inch thick fries. Repeat with the rest. Perfect French Fries. Tip: The potatoes must be completely dry before frying.
Place the potato on its side and using a large chef's knife, cut a thin slice off the edge to serve as a flat base. Flip the potato cut side down and cut thin slices; make them the width you'd like your french fries. Stack a few of the slices, then cut them in the other direction to create french fries.
Before frying homemade French fries, you need to cut the potatoes. And before cutting them, you need to.