Thank you for a great tutorial and explanation of the different sensors. I just got the Vernier sensor to check my kombucha at home. I think you have the only video out there!! So thank you.
Gosh, getting this question answered is so much harder than I anticipated. Acidity and other elements are so much easier to measure, it seems. I know home parent booch brewers who monitor for alcohol and I can't imagine all them are doing all this, but maybe they are. Thank you for this info. I hope I can find a lower-barrier answer for my needs but it's great to know there are conscientious folks taking the time and labor to share the above with us. Thank you for your generosity!
Hey, thanks so much for your video. I currently have been brewing my own homemade hard kombucha for a few months but struggling to know when to best take the OG hydrometer reading and Final reading. Phase 1 of my brew is first fermentation with the SCOBY and sugar black tea for 8 days. Phase 2 is my second fermentation moving my kombucha to two 1-gallon glass jars with the airlock and adding in champagne yeast mixed into two cups of sugar water to "wake up" the yeast. This phase is also 8 days. Phase 3 is when I move my kombucha to two different 1-gallon glass jars where I add my dried fruit and keep airtight for 5 days before putting into the fridge. Based on the above process, when do you think is best to take my initial hydrometer reading and final hydrometer reading? I'm trying to figure out the ABV% of my batches now that I have a set and written process. Any help or recommendations would be much appreciated.
I JUST did a video using alcohol breathalyzer and a chart like you mentionned with the rare combination. I don't know if that works as well and I might spend more time experimenting. I'm actually using my mouth as test tube and blowing air in the alcohol breathalyzer 1 second after spitting kombucha. :) Fact is that there is neutral air passing through my mouth and it gives me more or less a consistent value. I taught it was interesting in all case. I don't know if it's really a thing.
Given the alcohol is present in the headspace, would the reading be lower if the sample was left uncapped for an extended time? (Though I guess vodka or any other alcohol still keeps it potency for the duration of the evening drinking it....)
Hi Brian, the alcohol is present in the headspace due to us heating the capped vials to a high temperature for analysis. If the sample was left uncapped, in general some ethanol will evaporate.
Hi there! The RC alcohol detector directly measures the alcohol. So no need to filter, degas, or anything like that. You can measure any sample even if it is carbonated and there is SCOBY floating around :)
Thank you for a great tutorial and explanation of the different sensors. I just got the Vernier sensor to check my kombucha at home. I think you have the only video out there!! So thank you.
Gosh, getting this question answered is so much harder than I anticipated. Acidity and other elements are so much easier to measure, it seems. I know home parent booch brewers who monitor for alcohol and I can't imagine all them are doing all this, but maybe they are. Thank you for this info. I hope I can find a lower-barrier answer for my needs but it's great to know there are conscientious folks taking the time and labor to share the above with us. Thank you for your generosity!
This channel is wonderful, thank you!
Hey, thanks so much for your video. I currently have been brewing my own homemade hard kombucha for a few months but struggling to know when to best take the OG hydrometer reading and Final reading. Phase 1 of my brew is first fermentation with the SCOBY and sugar black tea for 8 days. Phase 2 is my second fermentation moving my kombucha to two 1-gallon glass jars with the airlock and adding in champagne yeast mixed into two cups of sugar water to "wake up" the yeast. This phase is also 8 days. Phase 3 is when I move my kombucha to two different 1-gallon glass jars where I add my dried fruit and keep airtight for 5 days before putting into the fridge. Based on the above process, when do you think is best to take my initial hydrometer reading and final hydrometer reading? I'm trying to figure out the ABV% of my batches now that I have a set and written process. Any help or recommendations would be much appreciated.
I JUST did a video using alcohol breathalyzer and a chart like you mentionned with the rare combination.
I don't know if that works as well and I might spend more time experimenting.
I'm actually using my mouth as test tube and blowing air in the alcohol breathalyzer 1 second after spitting kombucha.
:)
Fact is that there is neutral air passing through my mouth and it gives me more or less a consistent value. I taught it was interesting in all case. I don't know if it's really a thing.
How would I test if there’s Methanol produced in the brew ?
Given the alcohol is present in the headspace, would the reading be lower if the sample was left uncapped for an extended time? (Though I guess vodka or any other alcohol still keeps it potency for the duration of the evening drinking it....)
Hi Brian, the alcohol is present in the headspace due to us heating the capped vials to a high temperature for analysis. If the sample was left uncapped, in general some ethanol will evaporate.
Hi, thanks for the overview. However, it's not clear how carbonation affects the measurements, especially during RCAS mesurement.
Hi there! The RC alcohol detector directly measures the alcohol. So no need to filter, degas, or anything like that. You can measure any sample even if it is carbonated and there is SCOBY floating around :)
@@rarecombinationsllc Question... do you have to substract the TA (acetic acid) from the final reading?
@@gennaterra Nope! The RC detector directly measures the alcohol!
How accurate this device ?