Originally Posted by planenut
I've been losing over a gallon on my 5 gallon boils(20%). Maybe it is the larger surface area or too hard a boil..
I lose about 20% too. My last batch I started with 7.5 boiled for 90 mins expecting 5.5 and ended up with just under 5. I am adjusting accordingly. I believe the shift is due to the relative humidity because I am boiling off a bunch more than a month ago and everything else is equal.
This is all good though because my next batch is a Dubbel with 16# of grain so I will start out with close to 9 1/2 gallons.
On Tap: 1. Kelly R. IPA, 2. Roter Hund Hefeweizen, 3. Bud Killer Blonde, 4. Red Dog Pale, 5. Roter Hund Oktoberfest, 6. Pumpkin Ale, 7. McRed's Stout (with new nitro system and stout tap,) Cream Soda, 8. ESB # 3, & 9. Ordinary Bitter.