Which McDonald's campaign used the singing line “Two all-beef patties” to promote the Big Mac?

The campaign using the line “Two all-beef patties” was the Big Mac Chant.

The chant listed the Big Mac's ingredients in a short, rhythmic sequence: two all-beef patties, special sauce, lettuce, cheese, pickles, onions, and a sesame-seed bun. Its compact wording made the product formula easy to remember and gave McDonald's a distinctive piece of audio branding.

The promotion was especially effective because it turned a product description into a memorization challenge. Customers could repeat the line as a jingle, while the ingredient order reinforced what made the Big Mac recognizable among fast-food hamburgers.

The chant is sometimes casually called the “Big Mac song,” but the established name is “The Big Mac Chant.” The product itself was created by franchisee Jim Delligatti and introduced nationally in 1968, separate from the later advertising device.