malted milk

noun3

1. •
   A powder made by mixing malted barley, flour and milk, the mixture then being dried by evaporation; initially developed as a nutritional supplement, later used as a flavouring.

   • Malted milk powder is essentially a nutritional supplement, but it has a sweet, toasty milk flavor (think malt balls and malted milkshakes) that makes it a popular partner for chocolate. — 2008
2. •
   (UK) A hot beverage made from a mixture of malted barley, flour, and milk.
3. •
   (US, Australia) A milkshake with malted milk powder added for flavour.

   • More dispensers fail with malted milk than with any one drink that I know about. There seems to be less knowledge of what a good malted milk should taste like than there is concerning any other drink. — 1918