Awesome Stout, to licorice stout in 1 week

[Grossy]

I made the best stout ever, it was awesome. But it has now turned into a licorice stout and is terrible, any ideas on what could have happened.

I brewed a version of NCBeernut's Deception sweet stout a month ago. Three weeks in the primary, 1 week on CO2, then two weeks of awesomeness. A friend was coming into town so I decided to hold off and save this beer. So one week goes by, never touched it until last night. Licorice!!! you can smell it, you can taste it.

Recipe below, I hit every number exactly.

Deception Stout - Sweet Stout (13B)

Batch Size 10.5 gal
Boil Size 11.5 gal
Boil Time 60 min
Efficiency 70%
OG 1.057
FG 1.017
ABV 5.3%
26.2 IBU (Tinseth)
Color 41.6 srm (Morey)

Total grain: 24.000 lb

Pale Malt (2 Row) -14.000 lb
White Wheat Malt -3.500 lb
Caramel/Crystal Malt, 60L -2.250 lb
Black Barley (Roast Barley) -1.250 lb
Biscuit Malt -16.000 oz
Chocolate Malt (US) -1.500 lb

Milk Sugar (Lactose) - 8.000 oz, added 50 minutes after start of boil.


Hops
Magnum 13.1% 1.300 oz
Boil 55.000 min

Yeast
2x - 1.5 liter Starter: WLP004 - Irish Ale Yeast (I split the batch into two ale pales)

 

[Travestian]

I brewed this beer too, exact recipe, but never got any hint of licorice in it. I bottled it though since I can't keg yet. I'm wondering if there was something in one of your keg lines that caused the off flavor. Have you pulled a sample from the keg through the top (not through the tap line)?

 

[DrunkleJon]

That sucks. I do like licorice though. Possibly a keg infection or something nasty in a line.