In-N-Out has allergy friendly fryers, as a celiac I had a great experience there. Ordering there you can get fries and their milkshakes are also gf. They say they’re ketchup is gluten free but it contains some risky ingredients. All In-N-Out locations should have an allergy friendly fryer but please keep in mind that mostly teenagers are hired who don’t know a lot about celiac and gluten intolerances, therefore it isn’t guaranteed that there won’t be a bit of cross contamination.
— Somewhat
— No gluten-free information on the menu
— Not Much
— Good