This 1861 recipe for a toast sandwich consists of a piece of toast between two slices of untoasted bread

A toast sandwich consists of a piece of toast in between two slices of untoasted bread. The slice of toast is allowed to be buttered. According to Wikipedia, an 1861 recipe directs people to add salt and pepper to their toast sandwiches, for flavor. If you're an extremely picky eater, or just a lover of toast, this may be the perfect lunch for you.