What name did McDonald's give its operating method introduced in 1948?

McDonald's called its 1948 operating method the Speedee Service System.

Richard and Maurice McDonald reorganized their San Bernardino restaurant around a limited menu, assembly-line preparation, and standardized portions. This approach reduced waiting times and made food production more consistent.

The system became an important foundation of modern fast food. It also influenced the company's later franchising model, because standardized procedures made it easier to reproduce the same customer experience at different restaurants.

The phrase is sometimes confused with the name Speedee, which was the mascot associated with the system. Speedee was the character; the Speedee Service System was the operating concept.