IMPD is closely guarding the milk Sunday’s winner will drink.
The tradition dates back to 1936. Victor Louis Meyer asked for a glass of buttermilk after winning the race. His mother had long told him to drink milk on hot days.
By the 1950s, milk companies began sponsoring the race purse and handed a bottle of milk to the winner.
Emerson Fittipaldi bucked tradition, though, in 1993. He drank orange juice instead of milk to promote his citrus farms in Brazil.
The American Dairy Association pays out $10,000 if the winner sips milk in victory lane.