Michter's Sour Mash returned to the market in 2012, after an absence of over twenty years. Much like sourdough bread, sour mash whiskey uses previously fermented mash as a starter for the new batch. This whiskey delivers flavours of burnt sugar, candied cherry and vanilla, finishing with a rye-grain influenced spicy kick. Michter's Sour Mash returned to the market in 2012, after an absence of over twenty years. Much like sourdough bread, sour mash whiskey uses previously fermented mash as a starter for the new batch. This whiskey delivers flavours of burnt sugar, candied cherry and vanilla, finishing with a rye-grain influenced spicy kick. 750 mL bottle