Which of the following is a potato side dish?

Curly fries are recognized as a potato side dish because they are made from potatoes and are prepared by cutting them into a spiral shape before being fried. This method of preparation highlights the starchy quality of potatoes, making curly fries a popular accompaniment to main dishes and enhancing the meal experience with their unique texture and flavor.

Other options, while they are offered in the menu, serve different purposes. Mini churros are a dessert item, and a single taco is a main dish. Onion rings, although they contain a batter-fried component that many might associate with sides, are made primarily from onions rather than potatoes, which disqualifies them as a potato side dish.