Freshly baked Toasted Buns using old-fashioned, slow-rising sponge dough. Two Cheese Slices of American cheese. Two 100% pure American Beef Patties. No additives, fillers or preservatives. Freshly sliced or grilled Onions. Fresh, crispy & hand-leafed Lettuce. A slice from only the plumpest and juiciest Tomato. A spread recipe, unchanged since 1948. This is a Californian staple.