Tue Oct 05, 2010 11:29 am
That's a good question; though by John's own admission there is an awful lot of arm waving with mineral additions. Such so, I'd feel confident that the difference between 6 and 7 gallons (<15%) wouldn't warrant extra concern in most cases (ever, in mine).
Pretty sure I read the answer to this somewhere, but didn't care enough to note. I hope your question gets answered; but if not, I'd relax, not worry and have a homebrew!
In keg:
Doppelbock
Berliner Weisse
DIPA
Dortmunder
On deck:
Emma's Brown