 Oat milk has a creamy texture and oatmeal-like flavor, and is manufactured in various flavors, such as sweetened, unsweetened, vanilla or chocolate.Unlike other plant milks having origins as early as the 13th century, oat milk was developed in the 1990s by the Swedish scientist Rickard Öste.Over 2017–2019, oat milk sales in the United States increased 10 fold, and one major manufacturer, Oatly, reported a three-fold increase in worldwide sales.