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Update on Helles Bock : Lagering but still waiting for new fermenter to transfer to secondary and gelatin. Update on Session IPA: Fermented for 10 days with US-05, FG at 1.009. Tastes very very green, but no signs of medicine whatsoever. So very pleased, 3 batches with no medicine in it. I...

Update on Helles Bock : Fermenting for 2 weeks and finished diacetyl rest. FG at 1.010 No signs of medicine, tastes great. Will begin lagering now ! Another batch on primary now : Session IPA fermenting for 2 days with US-05

From my point of view, you do not have and infection because medicinal would never fade. You probably got off flavor byproducts from yeast during fermentation and now te yeast is cleaning them. I would re-use and give them a proper low gravity starter.

Update on this brew: FG at 1.016 , fermented 21 days. No medicine on this one, tasting nice. On primary again : Helles Bock fermenting at 12ºC. Will check on flavor in a few days time.

Update on this just for future reference. Start OG : 1.058 Current gravity at 4 days fermentation : 1.020 No signs of medicine yet. Good steady flow of bubbles on airlock.

I have been trying to find a dealer to replace all Grainfather Conical Dual VAlve Tap rubbers and seals. It has not been easy, as dealer often do not carry this, and Grainfather themselves do not sell them directly (dont know why but they said i had to buy from a local dealer). So meanwhile, i...

In fact, the only plastic i use on the cold side (after boiling) is the grainfather counterchiller that i cannot replace, only sterilize. I do my boiling on the Grainfather, use the counterchiller with 100ºC wort to sterilize and then begin cooling and sending directly to the conical fermenter...

Thank you. I do pitch low. I use the conical fermenter cooling system to take it down to pitch temp (18C-20C).

You say OXI is not a sanitizer, but ChemiPro OXI product is sold as a "no rinse cleaner". But anyway, i DO use StarSan after that. I appreciate your thoughts, but i dont believe its infection related. This problem happens on every other brew i make, using same cleaning methods. An infection...

Final note on this batch : it was dumped yesterday. Medicine flavor does not dissipate (8 weeks in primary) despite all other flavors were quite nice. For a Saison it was very pleasant and if it wasnt for the medicine, it would be a fantastic beer. too bad. I will try this recipe again, with...

Yeast starters smell and taste bland (as they should) and without medicine. Nope. I figured that if it is Stress related, i do not wish to re-use the 3787. But i have done that in the past without issues with the 3787 and 1762.

Still, don't you think an infection would take longer to appear ? I mean, i had beers that started fermentation within 4h of pitching and already 5 days later they were on FG and showing medicinal flavors....

That is quite an interesting comment, and most definitly would explain very clearly why some batches are completly fine, and others are completly TRASH. I dont have "so so" batches. Either it is good, or it is medicinal. The water containing something that i cannot neutralize with a Campden...

Islandlizard, Thank you for your inputs. Much appreciated. I may or may not, be doing something wrong in cleaning. My ChemiPro OXI is supposed to be a no rinse cleaner : "THE no-rinse, multifunctional cleaner for all light duty cleaning in just one treatment! Active oxygen minimises contact...

Shouldnt the flavors produced by acetobacter should resemble the ones in Sour beers? My taste is not sour at all, far from it. It is medicinal like resembling Povidone-iodine smell. I just measured the PH of the finished beer, its on 4.3 so not too low at all.

I understand what you are saying. Even yesterday i tasted a comercial Saison that i was not particularly fond of. It was evident that it had a lot of phenols and a kind of medicine taste to it. I do know that this CAN be a particularly characteristic of Saisons, but not always ! Tank7 is not...

Thank you. I thought of that...but wouldn't that show up in every batch ? I just finished a dubbel with 3787...and it is just wonderfull. The current Saison (still in primary) is the one medicine again... Is it possible that some fermentation show infection and some mask it ?

I can share my experience with stressed yeast fermentations, they all came out medicinal. Different styles, same brewing technique. I noticed a pattern when last year i ordered 3 different vials of Wyeast online, it was summer and they took 1 week to arrive. Ice packs were melted, so i dont...

And stressed yeast... And dont use stressed yeast. My goal is, how to "detect" stressed yeast before i put it in the vessel

Absolutly nothing. Of course from a methology POV. Water always fluctuates a litle, and i may be more or less caucious with sanitation time to time. But i am usually very thorough. When i use liquid, i always make starters (1-2L). For the Dubbel, i made a starter from a Wyeast pack that was...