Not much has changed since Lovie Yancey opened the first Fatburger in 1952. Since then, the chain has expanded, but the food has stayed the same: 100% USDA lean beef burgers grilled to order and hand-scooped ice-cream shakes. Each restaurant stays true to Yancey's vision, even down to retro-influenced digs with jukeboxes blasting old school favorites designed to make listeners flash enthusiastic thumbs-up signs. Inside the kitchen, cooks stack burgers from 2.5-ounce burgers to 24-ounce triple burgers on toasted regular or gluten-free buns as fresh onions crisp inside fryers filled with cholesterol-free oil. Diners can also enjoy Fatburger's signature chili made with a secret blend of herbs and spices or milk shakes topped with dollops of whipped cream that resemble fluffy, white clouds shaped like marshmallows.