Call of the Void was Siren's first foray into low-alcohol brewing, released in January 2024 as a duo with Out of Nowhere. They went straight for the deep end: an adjunct-loaded nitro stout made in collaboration with Mash Gang, the Salford brewery that has quietly become one of the most technically accomplished no/low producers in the UK. The ingredient list is long and deliberately so. Dark grains form the base, but cacao nibs, coffee, liquorice root, tonka bean, and vanilla all go in alongside Apollo and Sabro hops. On the nose you get coffee and dark chocolate upfront, with a warm, almost biscuity sweetness from the tonka bean underneath. The nitro dosing — pour hard, fully invert the can — delivers the expected creamy head and soft mouthfeel, which does a reasonable job of compensating for the thinness that 0.5% inevitably brings. It is not quite in the same bracket as a full-strength stout, but for a first attempt at the format it is convincing. The roast character is genuine rather than approximate, the bitterness is calibrated rather than harsh, and the finish is dry in the way a good stout should be. Confirmed vegan.