Close Encounters of the Third Kind

The Evil Twin tap takeover held at Craft Beer Co in Clerkenwell back in January was probably the first time I've ever bought a round of three 1/2 pints and only got 50 pence change back from a twenty pound note. That was the moment that crystallized for me how ridiculous it is to sell (one-off or unusual) high ABV beers without offering them in 1/3 of a pint measures.