In the British Brewing tradition of the 18th Century, many of the London breweries would have a Stock Ale (in this instance, the Speyside Whisky Barrel-Aged XXXK Vintage Ale), which they would blend with a running beer (in this case, Quartermaine). Brother Frater is a blend of the 10% XXXK with a 5.8% English IPA resulting in an especially fruity 6.7% quaffable beer.
Producer / Brewery
ABV%
6.7