440ml Can 11.5% A classic Vault City recipe and one of the first ever sours they brewed with a double digit ABV…Revived from January 2021, Marshmallow Smoothie Sour blurs the line between beer and dessert. It’s bursting with rich blueberries, tart raspberries, and juicy blackcurrants before being conditioned on over 50 tubs of marshmallow fluff for a velvety soft sweetness.