In-N-Out’s fries are made 100% from potatoes and cooked in 100% pure sunflower oil without any additives. In addition, the oil is not used to fry any other items.

Five Guys fries are completely gluten-free. The chain cuts its potatoes fresh, soaks them in water, then fries them in 100% peanut oil that isn't shared with other items.

Chick-fil-A’s waffle-cut potato fries are gluten-free and fried in a separate fryer. The potatoes are made with pea starch, a product that is non-GMO and gluten-free.