I just got around to recreating this delicious beer cocktail I had at the Cocktails in the City event in London last year. It was created by The Whip, an amazing Kentucky Derby themed cocktail bar in Mayfair.
1&1/2oz Rhubarb vodka
1/2oz simple syrup
1 dash aromatic bitters plus one to garnish
3oz Wild Beer Co Wild Goose Chase to top
Red grapefruit slice and sprig of mint garnish
Add Rhubarb vodka, lemon, syrup and one dash of bitters to pilsner glass or similar sized vessel. 3/4 fill with crushed ice and swizzle. Top with beer and fill with more crushed ice. Garnish with grapefruit slice, sprig of mint and a dash of aromatic bitters.