These display varying levels of sweetness, but tend to be richer than dry stout. Oatmeal stout is brewed with oats to provide a smooth texture alongside a nutty, chocolatey richness.It's light in alcohol (Guinness barely exceeds 4% ABV, but other examples range from about 3.5-5%), bitter from a dose of roasted barley, and commonly served as a nitrogenated draft beer, which gives the pour a dense, creamy foam. Dry stout is indeed a dry beer style, made famous by the iconic Guinness Draught. Irish dry stout is the softest within the stout category and, as you may guess from its name, was not born in Britain, but we'll include it here anyway.