Culver's Ice Cream in Gluten-Free Restaurants Posted November 7, 2009 · Report to Admin We went to Culvers for ice cream and we all got really sick. Gluten sick..I ate the frozen custard last week and was fine but had the concrete vanilla today.. we only ordered from their gluten free menu. Anyone have any experience with this? Thanks. I got their chili once and felt sick afterwards (and that's supposed to be safe!) However, I have the Butterfingers Concrete and it doesn't bother me.