Related introduction:
John Montagu is a card lover. He is addicted to card games all day. It was difficult for the servant to wait on his diet, so he put some dishes, eggs and sausages between two pieces of bread and let him eat while playing cards.
Unexpectedly, Montagu was overjoyed when he saw this food, and casually called it "sandwich". Other gamblers followed suit and ate sandwich when playing cards. Later, the name of sandwich spread.
Extended data
Related background:
In Britain, sandwiches with fish sauce, cucumber, water celery and tomatoes in thin slices are specially used for drinking tea. In Scandinavian countries in northern Europe, sandwiches have no top layer, but are covered with exquisite fish, sliced meat and salad.
There are many kinds of sandwiches. In the United States, other foods with bread as the skin are also regarded as one kind of sandwiches. For example, tortilla (the staple food of Mexicans), bread roll and Italian authentic bread ocasa bag focaccia. Hamburgers are also a kind of sandwich. However, most English-speaking countries do not think so.
The popularity of Sandwich and the transliteration of English sandwich in Guangdong, Guangxi, Hong Kong and Macao. Other places are called sandwiches.
Baidu encyclopedia-sandwich