Weirdest fermentation I've ever had.
My standard Helles recipe, 5.5 gallons @ 1.050 SG, Diamond Lager yeast 2 packs, 2 weeks @ 52F.
All blowoff activity ceased, so I took a gravity reading yesterday and got a reading of 1.085, checked against 3 hydrometers, all the same. Not only that but the beer is now very dark, almost like a stout.
Smells and tastes normal for a Helles. What gives? Any ideas?