On tap at Ambulance, busily vibrant ‘botanical’ stout loads coconut-milked lime tartness and herbaceous ginger-lemongrass-basil pleasantries inside creamily caramelized coffee-beaned dark chocolate roast. Mild cayenne-peppered cinnamon snip and wispy vanilla-cumin-curry daubs found beneath herbal mocha concoction. A daringly expansive offshoot that works well.