Milk stout, also called cream or sweet stout, is a stout containing lactose, a sugar derived from milk. Because lactose is unfermentable by beer yeast, it adds sweetness and body to the finished beer. Milk Stouts have been claimed to be nutritious, and were marketed as such in the early 1900s with claims that would make the FDA wince. One ad read, ideal for nursing mothers, for the healthy, for the invalid, and for the worker. Surely we couldn’t stop at a traditional milk stout. Southern Tier 2X Stout is a double and at 7.5% abv is every bit as delicious as it sounds.