Reviving an old thread, but search doesn't seem to turn up other threads that discuss use of this technique to sour. I am keen to give the IBS tablets a try with a 20L batch, should I just bring to the boil for a minute and then crack open 4 of these when I've got the temp back under 60 C?takai said:No it doesnt. This stuff is 100% Lacto P
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Lactobacillus
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huez
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Under 35c is the range i think you want to be in, don't think they will survive at 60c. I kept mine at 30c and it still took over 48hours to get to 3.6pH. Some people report it taking under 24hours to get to 3.3pH
earle
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I did mine at 40C.
A point to note is that yeast struggle at lower pH. AT 40C I got down to about 3.7-3.8 after 24 hours, then I did the hop boil etc. With only one pack of US05 it took a few days to get going. Next time I would pitch at least 2 packs and rehydrate the yeast before pitching.
A point to note is that yeast struggle at lower pH. AT 40C I got down to about 3.7-3.8 after 24 hours, then I did the hop boil etc. With only one pack of US05 it took a few days to get going. Next time I would pitch at least 2 packs and rehydrate the yeast before pitching.
Dozer71
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In the midst of my first Berliner Weisse, Grain bill of pilsner and wheat mashed to 64C (BIAB method) to OG of 1.03 as expected. Brought to the boil, then covered with cling wrap straight away put lid on and dropped the temp overnight as don't have chilling facilities. Was 40C in the morning and pitched a 5 pack of Yakult (L.Casei at 6.5B per vial). Covered with cling wrap again and sleeping bag and left for 2 days. Have read that applying CO2 not as important when using pure strains (i.e. not grains), plus I don't have any. The temp dropped to 33C over the 2 days. Removed the cling wrap to be hit with a smell I have never encountered before. Checked all the off odours that can occur with souring and didn't appear to be any of them, but it was strong and I can't quite describe it. Boiled for 60 mins which generally killed the stench and the end of boil wort had a nice tartness about it. No chilled over night and pitched 1272 yeast which is 3 days in at the moment.
I went for Yakult following reading the Milk the Funk wiki with goodbelly probiotic drink, so it seemed an easy option to start with.
Next time will look to reduced the water for the BIAB mash, boil, then add ice cold water to chill to around straight after instead of waiting over night. Also looking at a yoghurt culture starter (Chobani no fat greek yoghurt) as outlined in Milk the Funk or even the IBS pills.
I went for Yakult following reading the Milk the Funk wiki with goodbelly probiotic drink, so it seemed an easy option to start with.
Next time will look to reduced the water for the BIAB mash, boil, then add ice cold water to chill to around straight after instead of waiting over night. Also looking at a yoghurt culture starter (Chobani no fat greek yoghurt) as outlined in Milk the Funk or even the IBS pills.
Thanks for the replies, that's very helpful. I don't know why I typed 60C in the previous question, I meant to say 40C 
Also thanks earle for the heads-up about yeast struggling with low pH, I usually overpitch harvested US05 so hopefully it won't be an issue but I'll keep it in mind when preparing to pitch.
Also thanks earle for the heads-up about yeast struggling with low pH, I usually overpitch harvested US05 so hopefully it won't be an issue but I'll keep it in mind when preparing to pitch.
Reading this thread got me pretty pumped on trying my first sour a few weeks ago so thought I'd share my experience. As a proof of concept I thought I'd give a stovetop berliner weisse with the Irritable Bowel Syndrome tablets a go. It was good.
Picked up a bottle of 30 Ethical Nurtients "IBS Support" capsules identical to the picture takai posted from a chemist for about $25. (Minor detail - the pharmacist told me to put them straight in the fridge but having no fridge available at work they stayed in my backpack in air con at work for the afternoon and were exposed to high 30s on the ride home before going in the fridge.)
I mashed 1kg pale ale malt in a mini stovetop BIAB. Got it just to boiling then turned off an cooled, ended up with 4.5L at 1.051.
At 35° I broke two capsules of the IBS support (this would allegedly be 40 billion cells) into the wort and left it in the spare bathroom for 5 days. No CO2 purging or temp control, it probably sat at mid to high 20s. I went away during this stage so didn't get to monitor but when I got back I tasted a bit and it was pretty sour! I don't have a pH meter but to taste it was just what I was after.
At this point I did boil for 20 min (no hops, mainly to get the hot break as it was still very turbid), the cooled and pitched 60ml of foamy yeast goodness from the US05 krausen on a pale I had going. Fermented at 18°, bumped up to 22° for a few days at the end. Not much froth during the whole ferment but gravity dropped to 1.012.
Cleared up with some gelatin in my new little 4L beerkat keg.
It is bloody delicious. Pretty tart but none of the unusual "funk" aromas. Not great head but there's enough not to look weird. I'll definitely give this a go at full size, maybe split and do half with apricots.
Picked up a bottle of 30 Ethical Nurtients "IBS Support" capsules identical to the picture takai posted from a chemist for about $25. (Minor detail - the pharmacist told me to put them straight in the fridge but having no fridge available at work they stayed in my backpack in air con at work for the afternoon and were exposed to high 30s on the ride home before going in the fridge.)
I mashed 1kg pale ale malt in a mini stovetop BIAB. Got it just to boiling then turned off an cooled, ended up with 4.5L at 1.051.
At 35° I broke two capsules of the IBS support (this would allegedly be 40 billion cells) into the wort and left it in the spare bathroom for 5 days. No CO2 purging or temp control, it probably sat at mid to high 20s. I went away during this stage so didn't get to monitor but when I got back I tasted a bit and it was pretty sour! I don't have a pH meter but to taste it was just what I was after.
At this point I did boil for 20 min (no hops, mainly to get the hot break as it was still very turbid), the cooled and pitched 60ml of foamy yeast goodness from the US05 krausen on a pale I had going. Fermented at 18°, bumped up to 22° for a few days at the end. Not much froth during the whole ferment but gravity dropped to 1.012.
Cleared up with some gelatin in my new little 4L beerkat keg.
It is bloody delicious. Pretty tart but none of the unusual "funk" aromas. Not great head but there's enough not to look weird. I'll definitely give this a go at full size, maybe split and do half with apricots.
I just cubed my first kettle sour attempt, 42L out at 1.040. Mashed 5kg of wheat and 5 kg of BB ale malt, pretty close to what I expected as the first run with my completed 82/56 1V setup.
Followed the IBS tablet method, pitching 5 caps into ~50L after boiling post-mash for 10mins. In 2 days ph dropped something around 3.8, +/- the error of my ph strips.
Very pleased with the taste out of the kettle. Seems tart, sour and dry - hopefully these characteristics will translate to the finished beer.
Followed the IBS tablet method, pitching 5 caps into ~50L after boiling post-mash for 10mins. In 2 days ph dropped something around 3.8, +/- the error of my ph strips.
Very pleased with the taste out of the kettle. Seems tart, sour and dry - hopefully these characteristics will translate to the finished beer.
user 37368
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I've also found 5 capsules of ethical nutrients in the grainfather at 33c for 36 hours works great. It lacks a bit of funk tho.
I missed a vital step in my explanation, I actually left the wort to cool ambiently (lid on the kettle) for 12hrs by which time it was 39deg and time to pitch - contact time for the lacto was only 36hrs.
Agree that a lack of funk is characteristic of the pure-lacto kettle sour however that's exactly what I am after - most who drink at my bar aren't keen on sours so the plan is to refine & educate to end up with refreshing crowd pleaser. Or a keg to myself...
Agree that a lack of funk is characteristic of the pure-lacto kettle sour however that's exactly what I am after - most who drink at my bar aren't keen on sours so the plan is to refine & educate to end up with refreshing crowd pleaser. Or a keg to myself...
earle
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Yep, you get a pretty clean sourness from kettle souring with lacto. Very refreshing and suited to particular styles like Berliner Weisse. If you want funk and Brett you'll need to slow sour. I recently did a kettle sour with the same grain bill as a Flanders Red. Very enjoyable but not the same complexity. I reckon the key is not to call your sour something its not so drinkers have the right expectation - I've called mine a Kettle Soured Red so people aren't expecting a proper Flanders Red when a kettle sour won't meet those expectations.
