For roughly a year and a half, Venn Brewing has been pouring a variety of beers at its location along the Hiawatha corridor, building a steady lineup of IPAs, traditional European styles, and fruited sours. This Saturday, the spotlight shines on Venn’s sour Cosmosis series. Sour Fest is the second annual showcase of Venn’s kettle sour series, with eight different options on tap all day long, served in two curated flight options. Try a flight of pomegranate guava sour, mango, pineapple, and triple berry. Or opt for the flight with tart cherry, black cherry, raspberry, and black currant. Don Oishi Kitchen will be parked outside serving hot food.