In-N-Out Burger is known for its emphasis on fresh ingredients and customer satisfaction, which includes accommodating various dietary preferences. While the restaurant does not have a specific gluten-free menu, there are some options for those who require gluten-free choices. Customers can order their burgers “protein style,” which replaces the traditional bun with wrapped lettuce. This alternative allows guests to enjoy the flavors of their favorite burger without the gluten-containing bun. Additionally, the fries at In-N-Out are made from fresh potatoes and are cooked in 100% sunflower oil, making them naturally gluten-free. However, it is advisable for individuals with severe gluten sensitivities or celiac disease to be cautious due to potential cross-contact during food preparation. To find more detailed information about ingredients or any specific inquiries, visiting the official In-N-Out Burger website may provide helpful resources.