Medium, bit dirty-cream head over dark orangey-copper beer. Indeed a rather sourish nose, wood, but also vegetables, wild yeasts, Sauerkraut, rhubarb, green peas. Woody, dry, watercolour paint, again wild yeasts as Brett or Pedio. Also some fatty acids, arachideoil flavour. Dry, lean MF, low to medium carbonation. Long lasting main flavour. By the brewers' own admittance, an unintented acidification. OK, and I can agree it is still palatable. But the danger IMHO is serving this in two, three, more months... it might well turn for the worse. Bought at the brewpub