Just wanted to let you guys know that I believe that adding raw spices in the secondary caused some off flavors in my pumpkin ale. I've made the beer a couple of times before but never added any additional spices after the boil. Anyway, I tasted the beer about a week ago when I kegged and it was great, but the spice was a little lacking so I added just a sprinkle of raw nutmeg, cinnamon, and clove. Took my first sample on draft today and it had this big astringent/sour flavor. After checking the keg there were these odd white specs floating on top of the beer, almost like dandruff, which I have never seen before.
I kegged two other beers that night and those both taste fine, so I don't believe it was anything in my transferring sanitation process. Checking with the BJCP beer fault list "raw spices" is listed as a reason by astringency. So, still not entirely sure that this was the root cause, but something went awry.
The beer is not really drinkable, which is really sad because it might be the beer I look forward to the most each year. Be warned, it would have taken no time to soak the spices in vodka or boil some tea but I decided to take a short cut.