It is made by putting cheese and sliced ham between two slices of bread. The bread is sometimes buttered and toasted. Vegetables like lettuce, tomato, onion or pickle slices can also be included. Various kinds of mustard and mayonnaise are also common.
Gerber sandwich or “Famous Gerber sandwich” is an open faced sandwich made in St. Louis, Missouri. The Gerber consists of a half section of Italian or French bread, spread with garlic butter, and topped with ham, and Provel or Provolone cheese, seasoned with a sprinkling of paprika and then toasted.