What was the name of McDonald's original quick-service operating system introduced in 1948?

McDonald's original quick-service operating system introduced in 1948 was called the Speedee Service System.

Richard and Maurice McDonald introduced the system when they redesigned their San Bernardino, California, restaurant around speed, limited choices, standardized preparation, and self-service. The approach reduced waiting time and made it easier to produce consistent food at relatively low prices.

The system was a major part of McDonald's early brand identity because it linked the restaurant's name with predictable service as well as hamburgers. Its name also inspired Speedee, an early mascot shown as a small chef figure with a hamburger-shaped head.

The Speedee Service System is sometimes confused with later corporate training or kitchen procedures. It was the original operational concept behind the brothers' 1948 reorganization, while the Golden Arches were a separate visual branding development in the 1950s.