Caramelized onions, grilled cheese (something like curd cheese), 2 smashes, 2 slices of American cheddar, special home made sauce and a Tomate slice hidden somewhere. The question is: is hamburger a sandwich?

Caramelized onions, grilled cheese (something like curd cheese), 2 smashes, 2 slices of American cheddar, special home made sauce and a Tomate slice hidden somewhere. The question is: is hamburger a sandwich?