Arranged over three floors of a dodgy-looking townhouse, this neat Chinatown cutie is from Eric Yu, he of 68 and Boston and Marylebone newbie, Burlock. All peeling parlours and louche dens, the look is high-class 1950s knocking shop masquerading as a Hong Kong herbalist's consulting rooms. Seasonal prescriptions rely on homemade tinctures, syrups and restorative fine-leaf infusions from Opium's Apothecary bar and teashop: signatures of note include The Devil Doctor, Golden Lotus, The Dragon & The Unicorn and Gunfire – an incendiary bullet of spiced rum, lemon oil and black tea that will blow your wig off. Head down a corridor to discover Peony, an enigmatic saloon high on absinthe, mezcal and rye. Cha and steaming baskets of plump dim sum act as damage limitation. As Glaswegians say, you’ll be ‘in a worse state than China’ (ie blotto) if you get hooked on Opium’s charms.