Opium isn't your typical Chinatown restaurant: You enter through a numberless green door – only when the amber light is on, mind – and find yourself a three-storey labyrinth complete with a dim sum dining room, an apothecary-style bar, a tea room and a 'bartender's table'. All this is already enough to warrant a visit, but if you needed an extra reason, the Chinese New Year celebrations should do it. Events will be going all week, including a Chivas Regal 18 year old art of blending masterclass. You'll get two cocktails, excellent dim sum and a bottle of your blended whisky.