Noun
milk stout (countable and uncountable, plural milk stouts)
A stout containing lactose.
Left Hand, however, went a step beyond and defined their flagship not only by style, but by method of presentation, with the birth of Milk Stout Nitro. Source: Internet
The Duck-Rabbit Milk Stout is a traditional full-bodied stout brewed with lactose (milk sugar). Source: Internet