On tap at Ambulance, thin lactic milk stout maintains soft water base as dark-roasted mocha malts and flaked oats sugaring take center stage. Black chocolate, chalky cocoa, burnt caramel, fudge, toffee and coffee illusions never prove to be as sweet as advertised since ashen hop astringency brings overstated mid-range bittering. Subtle vanilla, burgundy and burnt nut snips stay below the surface.