BangladeshBrewer
Active Member
I brewed 21 litres of beer mash (4 kg of barley malt / 1 kg oats), using glucoamylese to get more alcohol, and let it ferment with US-05 yeast for 20 days. The beer was delicious.
I heated it to 70c but had to stop (real world intervened) and then came back to it in a couple of days. I would not do this by choice.
Yesterday I went through the run. Firstly I should mention that I subsequently noticed that the thermometer on my vapor chamber is not reading right. I checked it afterwards and found it shows boiling water at 92c. So the following readings are given using the temperature I now know is wrong.
Going up to the 78-80c I expected to get ethylene at I tossed about 300ml. I *guess* that this means all the methaleye is gone, plus some of the ethylene. [PART 1 - tossed - it burned with a blue flame]
On my gas stove the temperature stayed in the range 79-82 on its own. I kept it there for about 5-6 hours and then decided I had to increase the temperature to finish.
Part 2 - 2 litres, which is 41.5% ABV on my alcohol meter (10 degrees C here now, adjusting from reading of 37 on an alcohol meter calibrated for 20c)
Once I increased the temperature, up to 92-94c (so in reality at 100c because my thermometer was broke) I collected three jars of approx 600ml
Part 3 (first little jar) - 11.4% ABV
Part 4 (second little jar) - 9.1% ABV
Part 5 (third little jar) - 6.5% ABV
About half of the volume of original mash was left in the kettle.
I would not have done it this way if I'd known what the actual temperatures were.
How to proceed now? Toss part 3, 4, 5 and treat part 2 as a stripping run and then do a distillation with just part 2 once I have a working thermometer?
I heated it to 70c but had to stop (real world intervened) and then came back to it in a couple of days. I would not do this by choice.
Yesterday I went through the run. Firstly I should mention that I subsequently noticed that the thermometer on my vapor chamber is not reading right. I checked it afterwards and found it shows boiling water at 92c. So the following readings are given using the temperature I now know is wrong.
Going up to the 78-80c I expected to get ethylene at I tossed about 300ml. I *guess* that this means all the methaleye is gone, plus some of the ethylene. [PART 1 - tossed - it burned with a blue flame]
On my gas stove the temperature stayed in the range 79-82 on its own. I kept it there for about 5-6 hours and then decided I had to increase the temperature to finish.
Part 2 - 2 litres, which is 41.5% ABV on my alcohol meter (10 degrees C here now, adjusting from reading of 37 on an alcohol meter calibrated for 20c)
Once I increased the temperature, up to 92-94c (so in reality at 100c because my thermometer was broke) I collected three jars of approx 600ml
Part 3 (first little jar) - 11.4% ABV
Part 4 (second little jar) - 9.1% ABV
Part 5 (third little jar) - 6.5% ABV
About half of the volume of original mash was left in the kettle.
I would not have done it this way if I'd known what the actual temperatures were.
How to proceed now? Toss part 3, 4, 5 and treat part 2 as a stripping run and then do a distillation with just part 2 once I have a working thermometer?