A Vault City twist on Mustikkapiirakka or 'Finnish Blueberry Pie', this sour combines ripe, juicy blueberries, for a balanced sweet & tart character, alongside vanilla and a layered malt base to create a delicious pastry crust element. Pouring vibrant purple and boasting a soft mouthfeel, this is a tangy, moreish and refreshing sour beer.