Sentence:  Some milkshake recipes included <WSD>malted milk</WSD> powder, which would eventually become known as “malteds”. The only difference was the addition of the <WSD>malted milk</WSD> which was an early food supplement manufactured by Horlicks. 
Meaning of the word marked with <WSD> tags:  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.