Which of the following ingredients does NOT belong on a traditional Big Mac?

The proper way to assemble a Big Mac is to add sauce to the lower bun, then top with chopped onion, shredded lettuce, cheese, beef patty, and some pickles. After that, add the middle bun and repeat until topping with another bun.

Asked by Rachel Bortles · Last updated 5 years ago · 2M views · SOURCE