Hi Gang,
So, I made an all grain batch yesterday and was off by 24 points (hit 1.054, calculated 1.078) on my gravity. I had the same thing happen to me two weeks ago when i brewed. These were around my 25th time brewing all grain and I have not run in to this before. The only change in my process is that I got my grains for the last two batches from a new LHBS. I checked the crush on the grains for the second batch to make sure they were actually crushed well and they looked fine to me.
So, a little about my brew from yesterday.
Going for a IIPA.
13.5 # us 2-row
1 # white wheat
1# Crystal
1# Cara-pils
I use one of the converted 10 gallon coolers as my MLT.
I mashed at about 151-152 for 90 minutes with about 6 gallons of water. Temp dropped to about 147 during that time.
Batch sparged with another 3-4 gallons of 172 degree water.
I didn't take any hydrometer readings which I do plan on doing next time (sorry!).
Boiled down to a little over five gallons and took the reading at around 72 degrees for a 60 degree rated hydrometer. I know that could make it off by a couple points but not 24 points.
The only other thing that changed is that my MLT was not quite as high when lautering (maybe a foot lower) but I can't see how that would make a difference. It took maybe a half hour to lauter.
So, I am really baffled as I have hit my OG pretty closely on all the previous batches I had done and I just can't figure out what went wrong on the last two batches.
Any ideas? Oh, I checked my thermometer in ice water and near boiling water along with a different digital thermometer and they were both really close to each other and at where they should be for the cold and hot temps.
Hm....
So, I made an all grain batch yesterday and was off by 24 points (hit 1.054, calculated 1.078) on my gravity. I had the same thing happen to me two weeks ago when i brewed. These were around my 25th time brewing all grain and I have not run in to this before. The only change in my process is that I got my grains for the last two batches from a new LHBS. I checked the crush on the grains for the second batch to make sure they were actually crushed well and they looked fine to me.
So, a little about my brew from yesterday.
Going for a IIPA.
13.5 # us 2-row
1 # white wheat
1# Crystal
1# Cara-pils
I use one of the converted 10 gallon coolers as my MLT.
I mashed at about 151-152 for 90 minutes with about 6 gallons of water. Temp dropped to about 147 during that time.
Batch sparged with another 3-4 gallons of 172 degree water.
I didn't take any hydrometer readings which I do plan on doing next time (sorry!).
Boiled down to a little over five gallons and took the reading at around 72 degrees for a 60 degree rated hydrometer. I know that could make it off by a couple points but not 24 points.
The only other thing that changed is that my MLT was not quite as high when lautering (maybe a foot lower) but I can't see how that would make a difference. It took maybe a half hour to lauter.
So, I am really baffled as I have hit my OG pretty closely on all the previous batches I had done and I just can't figure out what went wrong on the last two batches.
Any ideas? Oh, I checked my thermometer in ice water and near boiling water along with a different digital thermometer and they were both really close to each other and at where they should be for the cold and hot temps.
Hm....
