What phrase appeared beneath the early McDonald's Speedee symbol?

“Speedee Service System” appeared beneath the early McDonald’s Speedee symbol.

The phrase described the operating method created by Richard and Maurice McDonald at their San Bernardino, California, restaurant. In 1948, the brothers simplified the menu, reorganized food preparation, and designed work procedures for rapid, consistent service. Their mascot Speedee visually represented that system.

The wording is sometimes confused with later McDonald’s advertising slogans or restaurant standards. It was primarily a description of the company’s service model and a branding statement about speed. The system’s ideas—specialized stations, limited choices, and repeatable procedures—helped make the restaurant easier to operate and replicate.

Ray Kroc later expanded McDonald’s through franchising, but the system itself originated with the McDonald brothers. Its influence extended far beyond the original sign: standardized production became one of the defining features of the McDonald’s brand and of modern fast food generally.