You've heard of a martini trolley – you might even have been served an ice-cold, perfectly diluted martini tableside. So it stands to reason that the same formula would hold up pretty well for London's undisputed aperitif of the moment, the negroni. The trolley at BAR45 will offer up three options: classic, vintage, and aged. The differences are as you'd imagine: the vintage negroni will use heavily aged spirits, while the aged one will benefit from ageing in an American oak barrel, giving it a little kick of vanilla and spice. Never a bad thing, in our opinion.