An egg sandwich is an internationally popular breakfast staple that typically consists of eggs between slices of bread. The sandwich is usually enriched with cheese, and it's often complemented with some kind of meat such as cold cuts or sausage meat.
Nowadays, there are numerous variations on this sandwich, but it is believed that one of the first egg sandwiches was made in the early 19th century in East London by street vendors who wanted to earn some money and feed the hungry factory workers in the process.