Oat milk is about to be way more accessible. What started as a trendy hipster coffee shop find is coming to grocery stores nationwide this month by way of Silk. The brand, which you probably already know from its extensive line of non-dairy soy, almond, and cashew milks, creamers, and yogurts, is adding to its collection with "Oat Yeah." The milk alternative is launching with three flavors: plain, vanilla, and chocolate oat milk.