The Horseshoe sandwich was created in the late 1920s in Springfield, Illinois. It is made with two pieces of white toast, sliced ham on top, and covered with a large pile of french fries. Right before serving, hot cheese sauce is poured on top.
The original sandwich was served on a hot metal plate, similar to an anvil. The ham was shaped like a horseshoe and the french fries symbolized the nails.
Today there are several other meat choices, although hamburger is the most popular. There are also Horseshoes for breakfast, with choices of biscuits, toast, gravy, sausage, and of course cheese sauce.
Not everyone can finish a Horseshoe, however, so restaurant cooks created the Ponyshoe, which is half the size.