The primary vegetable ingredient in French fries is the potato. Typically, the starchy tuber is cut into strips and deep-fried until crispy and golden, resulting in the popular side dish we know today. Potatoes are favored for their texture and ability to absorb oils, leading to a satisfying crunch on the outside while remaining soft on the inside. While variations exist globally, the basic concept of frying potato strips has made French fries a beloved staple in many cuisines, particularly in fast food settings.