Just a heavy mash with some chocolate malt and crystal, brittish yeast BRT101 (RIP Alzymologist Oy, but I still have the Library). Takes time to mature, couple weeks after bottling it still asks for more bottle aging (hopefully few years) but already nice and mellow. Dangerously drinkable, for its ABV.
Looks delicious! Now I feel like I could really go for a barleywine... Thanks for sharing!