Culver's now carries Udi's buns and has an allergen list on its website. The bun comes sealed in its own package. The charge for the GF bun is $1. I ordered the children's meal and swapped the green beans for the fries. The child's meal comes with a coupon for a free small frozen custard. Celiacs will want to do their homework before visiting, but this gluten sensitive. person did not suffer ill effects.