Everything at Five Guys is gluten free, except for the buns (we brought our own). The buns are NOT toasted on the grill, so you don't need to worry about cross contamination in cooking your burger patty. I still always let them know about the gluten issue and ask them to change their gloves, in case they touch my burger or fixin's with their hands.The burgers are awesome. A small burger is actually ONE patty, and a regular burger contains TWO patties. All fixin's are gluten free, and you can get as many on your burger as you want, for no extra charge. The fries are cooked in peanut oil and are gluten free AND delicious. (Obviously, this is not a place to go if you have a peanut allergy, as there are also bins of peanuts in shells to munch on while you wait, and therefore there's probably peanut "dust" everywhere!) Beware a "regular" size fries is huge...enough for 3-4 people, in my opinion. Just avoid the Malt Vinegar for the fries, which is NOT gluten free. I'm giving this a 4-palm rating, just because you have to bring your own GF bun -- and because the menu is extremely limited (but yummy!).