The earliest hamburger is mainly composed of two buns and a beef Patty. In addition to the traditional beef Patty, the second layer of the bun is coated with butter, mustard, tomato sauce, salad dressing, etc., and then the tomato slices, Onions, vegetables, pickles and other foods are added, so that you can eat the main and side food at the same time.This food is easy to eat, delicious and nutritious, and has now become one of the most convenient staple foods in the best-selling world.