Launched in 1987 as an adult burger, McDonald’s Cheddar Melt had a beef patty, grilled onions, and cheddar cheese sauce on a rye bun. The burger had limited mass appeal since it didn’t feel like a classic burger, it didn’t pair naturally with fries, and the onions had a strong smell. In addition, preparation time was too slow since onions need separate prep, while liquid cheddar sauce was harder to portion and increased cleanup.
