What phrase appeared on McDonald's early restaurant signs promoting its service system?

McDonald's early restaurant signs promoted the “Speedee Service System.”

The phrase described the fast, simplified operating model created by Richard and Maurice McDonald after they redesigned their San Bernardino restaurant in 1948. The brothers reduced the menu and organized food preparation in an assembly-line style, allowing customers to receive inexpensive meals quickly.

Speedee was also represented by a chef character used in early McDonald's branding. The character and the service-system wording connected the visual identity to the restaurant's central promise: speed and consistency. The phrase predates the later Golden Arches-centered identity and the extensive character world associated with Ronald McDonald.

A common mix-up is treating Speedee Service System as an advertising slogan from the modern McDonald's era. It was instead the name of the early operating concept, appearing alongside the Speedee character in the chain's formative branding.