First Distillation. Basic questions
Posted: Wed Sep 29, 2010 6:52 am
Prestige 48 Hours Turbo Yeast
Essential Extractor Pro-Series II w/ premium kettle
I swapped jars about every 2-4oz/60-118ml
ABV of each jar:
1. did not measure first/heads
2. 84
3. 84.5
4. 83
5. 85
6. 85
7. 85
8. 86
9. 85
10. n/a (pulled too little to measure)
11. 82
12. 71
13. 85
14. 55 This is where the samples started to appear a little cloudy (I had a temperature flucuation due to inattention)
15. 47 corrected temperature issue
16. 48.5
17. 54 Condenser spit out about 3 oz/88.5ml in a matter of seconds. I've since read this is caused by a vapor lock and is called surging.
18. 52
19. 61
20. 39 Severe surging, temp normal. Almost filled the 6oz/177.5ml jar in less than 15 seconds!
21. 74 This sample was as clear as samples 1-13 and voted by some to taste the best
22. 55
23. 44
24. 42
25. 64 started raining
Questions
- *following directions for 15lb/7kg batch (medium amount of sugar as listed on packet)
*before yeast was added I got these readings:- +Potential Alcohol by Volume (PAV): 13%
+Specific Gravity (SG): 1.1023 (1.098 @ 90F/32C with adjustment of +.0043 for temperature)
*stopped bubbling after 4 days in 80F/26.5C room
*only allowed to settle for a few hours before distilling
*SG: .99
*Alcohol By Volume (ABV): 11-12% - +Potential Alcohol by Volume (PAV): 13%
Essential Extractor Pro-Series II w/ premium kettle
- *heat source: propane
*starting temperature of 84F/29C. (using basic thermometer in the rubber stopper at top of column.)
*45 minutes into heating it still read 84F/29C
*55 minutes into heating it read 170F/76.5C
*By 3 hours 20 minutes the flow was very slow at 175F/79.5C and it started to rain so I shut everything down
I swapped jars about every 2-4oz/60-118ml
ABV of each jar:
1. did not measure first/heads
2. 84
3. 84.5
4. 83
5. 85
6. 85
7. 85
8. 86
9. 85
10. n/a (pulled too little to measure)
11. 82
12. 71
13. 85
14. 55 This is where the samples started to appear a little cloudy (I had a temperature flucuation due to inattention)
15. 47 corrected temperature issue
16. 48.5
17. 54 Condenser spit out about 3 oz/88.5ml in a matter of seconds. I've since read this is caused by a vapor lock and is called surging.
18. 52
19. 61
20. 39 Severe surging, temp normal. Almost filled the 6oz/177.5ml jar in less than 15 seconds!
21. 74 This sample was as clear as samples 1-13 and voted by some to taste the best
22. 55
23. 44
24. 42
25. 64 started raining
Questions
- *Yeast packet says 14-18%. Is that for the largest batch?
*Should my ABV post-fermentation/pre-distillation have been higher than 11-12%?
*From what I've read, I think I may have gotten up to temperature too fast. Is 55 minutes from air temp to extraction temp too fast?
*Is my vapor lock theory correct? Is surging the proper term for the negative results from a vapor lock?
*Averaging 3oz/88.5ml per sample, was my ABV right to be descending per sample around 39oz/1.1l?
*Why the spike in ABV and clarity with sample 21?
*What would you recommend I do with the samples? They are still separated. In other words, keep everything but heads that is above a certain ABV and blend? Re-distill the cloudy samples?
*My next distill is going to be the 17lb/8kg version of this same yeast. (more sugar than this run.) If I want to add my cloudy, low ABV samples to this distillation, what should I do? I'm concerned about the volume of liquid I'd be putting in the kettle.