tgolanos
Well-Known Member
I brewed a German Pils this afternoon. Before starting, I entered my recipe into Brewer's Friend to get all of my numbers (expected BG, OG, FG, strike water amount & temp, etc) and hit everything spot-on. Pre-Boil gravity was 1.036 for a conversion efficiency of 80%. At this point, it seemed all was well. Boil went well, too, so now I'm just letting it cool enough to pitch my yeast.
However, now comes the interesting part. I took a sample to measure the OG, cooled it to my hydrometer temp but only measured 1.038- 0.002 points higher than my BG. I did add some top-off water to counter my boil-off so my first thought was it hadn't mixed well yet. I took another reading 30-45 minutes later, and it was still 1.038.
Any ideas of what went wrong here? Am I missing something glaringly obvious? Recipe is below for reference. Any help would be much appreciated.
Batch Size: 25L (20L post boil into fermenter, 5L top-off)
Boil size: 30L/8 Gallons
Estimated BG: 1.036
Measured BG: 1.036
Estimated OG: 1.043
Measured OG: 1.038
Ingredients:
3.25kg/7.2lbs Pilsner Malt (Castle), 37ppG
0.80kg/1.8lbs Pale 2-row (Joe White), 38ppG
0.25kg/0.55lbs Carapils (Weyermann), 33ppG
0.10kg/0.22lbs Melanoidin (Weyermann), 37ppG
Double milled all of the grains myself while heating my mash water. All the grains looked crushed and there was even some flour. Mashed in 18L/4.7 Gallons of water at 66°C for 60 minutes, dunk-sparged in cold water for 10 minutes, then squeezed. I did notice a tear in one of my grain bags - I do split-boils in 2 kettles because my stove can't handle full volume - so I couldn't squeeze that one as much as I had hoped. Combined my runnings, measured BG, and began boil.
Hops:
30g Perle at 60 minutes
15g Perle at 30 minutes
15g Saaz at 5 minutes
Cooled the worts in water/ice baths until they reached 30°C and poured them into the fermenter. Took samples to measure OG and let the wort continue to cool.
However, now comes the interesting part. I took a sample to measure the OG, cooled it to my hydrometer temp but only measured 1.038- 0.002 points higher than my BG. I did add some top-off water to counter my boil-off so my first thought was it hadn't mixed well yet. I took another reading 30-45 minutes later, and it was still 1.038.
Any ideas of what went wrong here? Am I missing something glaringly obvious? Recipe is below for reference. Any help would be much appreciated.
Batch Size: 25L (20L post boil into fermenter, 5L top-off)
Boil size: 30L/8 Gallons
Estimated BG: 1.036
Measured BG: 1.036
Estimated OG: 1.043
Measured OG: 1.038
Ingredients:
3.25kg/7.2lbs Pilsner Malt (Castle), 37ppG
0.80kg/1.8lbs Pale 2-row (Joe White), 38ppG
0.25kg/0.55lbs Carapils (Weyermann), 33ppG
0.10kg/0.22lbs Melanoidin (Weyermann), 37ppG
Double milled all of the grains myself while heating my mash water. All the grains looked crushed and there was even some flour. Mashed in 18L/4.7 Gallons of water at 66°C for 60 minutes, dunk-sparged in cold water for 10 minutes, then squeezed. I did notice a tear in one of my grain bags - I do split-boils in 2 kettles because my stove can't handle full volume - so I couldn't squeeze that one as much as I had hoped. Combined my runnings, measured BG, and began boil.
Hops:
30g Perle at 60 minutes
15g Perle at 30 minutes
15g Saaz at 5 minutes
Cooled the worts in water/ice baths until they reached 30°C and poured them into the fermenter. Took samples to measure OG and let the wort continue to cool.