I just got done brewing my 4th batch ever. My first 3 went very well. Today not so much. Missed my mash temp by 2ºF was aiming for 154 got 152. First time i've missed my mash temp. I collect my boil volume of 6.75 Gallons. When my boil is finished I'm looking at it like WOW thats not 5 gallons. Sure enough my 60 minute boil got me down to 4 gallons. So i had 2.75 gallons of boil off. WTF? Also my target gravity was 1.057. Even with all that boil off i only got 1.061. I only got 64% efficiency. Most of my beers have been 76-78 range.
So not only did i have crazy boil off i had about a 12% decrease in efficiency. I am confused by that. I figure out I do get about 1.25 to 1.5 gallons of boil off during the normal 60 minute boil or that has been my average. I'm just confused about this crazy amount of boil off and terrible efficiency.
So not only did i have crazy boil off i had about a 12% decrease in efficiency. I am confused by that. I figure out I do get about 1.25 to 1.5 gallons of boil off during the normal 60 minute boil or that has been my average. I'm just confused about this crazy amount of boil off and terrible efficiency.