For millennia Europe's drinks of choice have been beer and wine. They've mastered the production of both and have been reaping their boozy benefits for as long as anyone can remember. But the last few years have seen a growth in both the quantity and quality of cocktails on the continent. Now, mixed drinks (prepared by well-trained — often mustachioed — mixologists) are competing against grapes and hops for attention and patrons. Cocktail-focused boîtes are popping up all over, from Belfast to Moscow; here are some of the very best.