Oatmeal Stout

BJCP 16b

Overall Impression
A very dark, full-bodied, roasty, malty ale with a complementary oatmeal flavor. The sweetness, balance, and oatmeal impression can vary considerably.
Comments

Generally between Sweet and Irish Stouts in sweetness. Variations exist, from fairly sweet to quite dry, as well as English and American versions (American versions tend to be more hoppy, less sweet, and less fruity). The level of bitterness also varies, as does the oatmeal impression. Light use of oatmeal may give a certain silkiness of body and richness of flavor, while heavy use of oatmeal can be fairly intense in flavor with an almost oily mouthfeel, dryish finish, and slight grainy astringency. When judging, allow for differences in interpretation.

History
A variant of nourishing or invalid stouts of the late 1800s using oatmeal in the grist, similar to the development of sweet stout that used lactose. An original Scottish version used a significant amount of oat malt. Later went through a shady phase where some English brewers would throw a handful of oats into their parti-gyled stouts in order to legally produce a ‘healthy’ Oatmeal Stout for marketing purposes. Most popular in England between the World Wars, was revived in the craft beer era for export, which helped lead to its adoption as a popular modern American craft beer style that uses a noticeable (not symbolic) quantity of oats.
Ingredients
Pale, caramel and dark roasted malts (often chocolate) and grains. Oatmeal or malted oats (5-20% or more) used to enhance fullness of body and complexity of flavor. Hops primarily for bittering. Can use brewing sugars or syrups. English ale yeast.
Commercial Examples
Anderson Valley Barney Flats Oatmeal Stout, Broughton Scottish Oatmeal Stout, Figueroa Mountain Stagecoach Stout, St-Ambroise Oatmeal Stout, Samuel Smith Oatmeal Stout, Young's Oatmeal Stout