A seasonal brown porter from Siren designed to hit the spot when the weather turns. Siren cold-steeped grains overnight before brewday to build up a gorgeous chocolatey base for this rich, comforting porter. From there, roasty notes are layered amongst subtle smoke, coffee and hints of dark chocolate. Nitro Coldblooded pours outrageously smooth thanks to the addition of nitrogen which forms smaller, more profuse bubbles than carbon dioxide, giving the beer a smoother texture. A beer with a satisfying richness.