I'm in the process of making a pretty big pumpkin beer, and just transferred to secondary. There was an incredible amount of trub -- probably 1.5 gallons out of a 5 gallon batch. I guess it was a combination of a lot of malt and a lot of pumpkin. The beer had been in primary for about 10 days and so it was pretty well settled, and I think I got all the usable beer out of it I could.
Aside from being a little sad that my yield is down to 3.5 gallons, I have a couple concerns:
- Is the large amount of stuff that settled out going to affect my ABV calculations? I.e., was all that stuff in suspension originally, and artificially inflated my OG reading (1.072)?
- Should I reduce the amount of priming sugar I would typically, to avoid over-carbonation?
- Is it common to lose so much volume to trub, and is there anything I should do about it in the future?
EDIT: So there are two answers, one saying that suspended solids do not change specific gravity readings, one saying that they do. There must be a correct answer to this question, right?