How many layers is the sandwich wrapped in?

Sandwiches are made of two pieces of bread with a few pieces of meat and cheese and various seasonings.

a modern sandwich can have several layers.

The traditional sandwich was invented by John Montagu, Earl of England, in Sandwich (an unknown town in southeast England).

Sandwiches and sandwiches are transliterated through the English word sandwich. Sandwich is a typical western food, which is made of two pieces of bread with a few pieces of meat, cheese and various seasonings. It is easy to eat and widely popular in western countries. Appear in all western recipes, any kind of bread or flour roll, any kind of food that is convenient to eat, can be made into sandwiches. In Scandinavian countries in northern Europe, sandwiches have no top layer, but are covered with exquisite fish, sliced meat and salad.