Question: are sonic strawberry shakes gluten free?
Answer: Sonic Drive-In If you like burgers without a bun, you can order one at Sonic Drive In, and the fries and tater tots are gluten-free, too, according to Sonic's allergen table. However, Sonic's shakes, which come with a huge variety of toppings, are a better reason to go to the drive-in fast food restaurant.