- When the Indy Racing League was formed in 1996, the milk ritual was adopted to create a new memorable moment for the spectators and drivers.
- The tradition stems from a post-race interview in which the winning driver, Louis Meyer, was spotted gulping a bottle of buttermilk to rehydrate.
- Meyer was photographed drinking milk, and the image became iconic.
- The dairy industry then began promoting the consumption of milk during the race and beyond, leading to the official tradition.