In-N-Out's fries are a defining aspect of its menu and a topic of passionate debate among fast-food enthusiasts. Made from whole, fresh potatoes, the fries are hand-cut daily in each restaurant, ensuring that they maintain a high standard of quality and freshness. Unlike many fast-food chains that use frozen fries, In-N-Out opts for a more labor-intensive approach, resulting in a product that is crispy on the outside and tender on the inside. This commitment to using fresh ingredients reflects the company’s overall philosophy of prioritizing quality and taste in every aspect of its offerings.

One of the unique features of In-N-Out fries is their straightforward preparation process. They are cooked in 100% sunflower oil, which not only contributes to their flavor but also aligns with the chain’s dedication to using healthier cooking methods. In-N-Out offers two styles of fries: the standard version and the "Animal Style" fries. The latter includes a topping of melted cheese, grilled onions, and the signature In-N-Out spread, transforming the fries into a decadent side dish that pairs perfectly with their burgers. This customization option allows customers to enjoy a different experience with every order, enhancing the overall meal.

Despite their popularity, In-N-Out fries are sometimes polarizing. While some fans rave about their freshness and texture, others find them less appealing compared to other fast-food fries, particularly due to their lack of seasoning. In-N-Out's fries are lightly salted, which some customers appreciate for their simplicity, while others prefer a more seasoned approach. Nevertheless, the fries remain an integral part of the In-N-Out experience, and many fans consider them the perfect complement to the chain's burgers. Whether enjoyed on their own or dressed up with toppings, In-N-Out fries continue to be a beloved staple in the fast-food landscape.