A sandwich is a common food that humans eat on earth. They are almost always, if not always made with bread, and other foodstuffs. Common types of sandwiches include, peanut butter and jelly, Bologna, Hot Dogs, Sub sandwich and many others. One of the most sold types of sandwich in America is the hamburger, which is commonly sold in fast food restaurants as well as steakhouses. Colonel Burger is a very popular place to go to eat Hamburgers.