Original sentence: The Big Mac is a type of hamburger, a signature sandwich sold by the McDonald's chain of fast-food restaurants since 1968, made with beef patties, lettuce, cheese, pickles and onion, with a "special sauce" and a sesame seed bun
Edited sentence: The Big Mac is a type of hamburger, a signature sandwich sold by the McDonald's chain of fast-food restaurants since 1968, made with "two all beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun