Molecular mixology, liquor physics, culinary cocktails and multi-sensory serves are just a few terms that have been bandied about in an attempt to accurately label a crucial modern bartending cause célèbre. While the prospect of experimental techniques such as reverse spherification – turning the cocktail into a gel sphere that bursts in the mouth – is enough to get purists scoffing into their Sazeracs, inventive bars across the globe are demonstrating a more open-minded approach; deconstructing, layering, building and generally pushing drinks to their limits with the use of specialist kit.