Sandwich Theory

It is not uncommon for lunchtime conversations to evolve into the endless debate over what counts as a sandwich

I decided to create an infographic explaining what I believe the proper classification of sandwiches is, since I enjoy infographics, classifying things, and sandwiches.

A true sandwich is described as two unattached pieces of bread that hold one or more ingredients between them. This implies that the bread is the key to determining what a sandwich is, and how they are related: