The burger, originally introduced in 1980, proved to be a sales disappointment and was later replaced with the highly successful Chicken McNuggets.

[citation needed] Viewed in April 2015, McDonald's website states that the McChicken contains a blend of dark and white meat chicken.

[10] It originated as a nationwide menu item in January 2006, but by June of that year, McDonald's confirmed it had been discontinued due to slow sales.

[13] McDonald's restaurants in Hong Kong, Singapore[14] and India[15] serve a McSpicy variant, with a larger, crispier patty with increased spiciness and flavor.

[16] In Hawaii, the Ala Moana Shopping Center McDonald's sells the McTeriChicken variant, a McChicken with teriyaki ("teri") sauce.

In Canada, the UK, Ireland, Australia (where it originally appeared as a promotional menu item but, due to its popularity, became a full-time menu item) and New Zealand, the McChicken also comes on a sesame-seed bun but with lettuce and a seasoned mayonnaise sauce called "McChicken Sauce".