The hamburger originated in the late 19th to early 20th century.

It is believed to have roots in Hamburg, Germany, where beef patties were popularized.

The modern hamburger as we know it was popularized in the U.S., particularly in fast food.

A typical hamburger consists of a cooked beef patty placed between two slices of a round bun.

Cheese can be added, turning it into a cheeseburger.

Standard toppings include lettuce, tomato, onions, pickles, ketchup, mustard, and mayonnaise.