Shoppers browsing the artisanal stalls at London’s famous Spitalfields Market in February may have spotted a new pop-up, offering free tasting in exchange for a candid review of their brew. Another up-and-coming craft brewery from Clapton? Or perhaps a microbrewer planning to take on the big boys? Both are good guesses ? but not quite. On a mini blackboard at the end of the bar, ?Premium Danish Lager? is chalked in capitals.