Malted milk is malted barley and wheat flour, mixed with whole milk, evaporated into a powder. It was first marketed as Diastoid by James and William Horlick, brothers from Gloucestershire, who founded Horlicks in Chicago in 1873. William Horlick received United States patent 278,967 for it ten years later.
Malted milk was originally manufactured as an artificial infant food. It became better known in the USA as the basis for malted milkshakes, which were invented in 1922 by a soda jerk at a Walgreens drug store in Chicago.
