An ‘Egg Banjo’ has been a forces' favourite food of choice ever since er, well … sliced bread.

But how many people actually know why it is called an ‘egg banjo?'

The "egg banjo" is a sandwich, a runny fried egg, inserted between two thick slices of bread … a very popular British military snack.

Ingredients are simple - heavily buttered thick sliced bread, and one or more fried eggs.