What was McDonald’s original operating system called after its 1948 menu overhaul?

McDonald’s original operating system after its 1948 menu overhaul was called the Speedee Service System.

Maurice and Richard McDonald temporarily closed their San Bernardino drive-in in 1948 and redesigned its workflow. They reduced the menu, introduced self-service ordering, used standardized portions, and arranged the kitchen so food could be prepared quickly and consistently. The system drew inspiration from factory-style production.

The name connected the process with Speedee, an early McDonald’s mascot represented by a chef-like hamburger character. Speedee was later replaced in the company’s public identity by Ronald McDonald, but the service system’s principles remained influential in the chain’s growth.

The Speedee Service System is sometimes mistaken for a slogan or a single piece of equipment. It was instead a coordinated restaurant operating method. Its ideas—specialized tasks, repeatable procedures, and limited menu choices—helped make McDonald’s recognizable across different locations.