What fry style is cut in a corrugated, ridged fashion?

Crinkle-cut fries are cut in a corrugated, ridged fashion.

Their wavy edges are made with a crinkle cutter or a commercial blade that moves through the potato in a ridged pattern. Unlike straight-cut fries, which have flat sides, crinkle-cut fries have repeating grooves along their length.

The shape is not merely decorative. The ridges increase the fry’s surface area and create channels that can hold dipping sauce. They also produce a distinctive combination of crisp edges and a soft potato interior, depending on the thickness and cooking method. Frozen-food manufacturers and fast-food restaurants commonly sell this style.

Crinkle-cut fries are easy to confuse with waffle fries, but waffle fries have a lattice pattern created by rotating the potato between cuts. Shoestring fries are much thinner, while steak fries are thick, usually straight-cut pieces. “Crinkle-cut” describes the cut itself, not a particular seasoning or recipe.