What was the McDonald brothers’ fast-service operating system called after their 1948 restaurant redesign?

The McDonald brothers’ fast-service operating system after their 1948 redesign was called the Speedee Service System.

The system replaced the original drive-in barbecue model with a streamlined hamburger restaurant. Customers ordered at a counter, while the kitchen used standardized procedures and a limited menu to produce food quickly and consistently.

Its name connected the restaurant to Speedee, an early McDonald's mascot shown as a smiling chef. The system helped establish ideas that later became central to fast food, including assembly-line preparation, narrow menus, and predictable portioning.

The Speedee Service System is distinct from the later McDonald's brand identity. The Golden Arches, Ronald McDonald, and the modern corporate advertising style were developed during subsequent stages of the company's growth, especially after Ray Kroc began expanding the concept nationally.