The brewery say:
A recipe from the archives and one of the first ever sours we brewed with a double digit ABV… Revived from January 2021, our 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.
| Brewery | Vault City (Edinburgh) |
| ABV | 11.5% |
| Style | Sour |
| Package | 440ml Can |
| Allergens | Barley, Eggs |
| Dietary | - |