Long fermentation time

Other discussions for folks new to the wonderful craft of home distilling.

Moderator: Site Moderator

Post Reply
Karooboy
Novice
Posts: 23
Joined: Wed Jul 01, 2020 9:09 pm

Long fermentation time

Post by Karooboy »

Hey guys, so I've got some sugar washes fermenting now for about 12 days, bubbling happening, wash temp about 26 degrees Celsius, used bakers yeast. The gravity ready hasn't dropped, and it still taste sweet. Followed all the steps, any reason why. The first several days was re wally cold weather, then I moved them inside with a heater.
Last edited by Karooboy on Sat Jul 25, 2020 10:29 pm, edited 1 time in total.
User avatar
Hambone
Rumrunner
Posts: 509
Joined: Sun Jun 07, 2020 7:24 am
Location: MO, just around the bend...

Re: Long fermentation time

Post by Hambone »

pH crash?
Good judgement is the result of experience.

Experience is usually the result of bad judgement..
User avatar
Deplorable
Site Donor
Site Donor
Posts: 3994
Joined: Thu Jun 25, 2020 12:10 pm
Location: In the East, (IYKYK)

Re: Long fermentation time

Post by Deplorable »

Hambone wrote: Sat Jul 25, 2020 7:36 ampH crash?
Thats where I'd place my money.
Fear and ridicule are the tactics of weak-minded cowards and tyrants who have no other leadership talent from which to draw in order to persuade.
OtisT
Master of Distillation
Posts: 3183
Joined: Sat Oct 24, 2015 11:59 am
Location: Pacific Northwest

Re: Long fermentation time

Post by OtisT »

What was your starting gravity? Where is it at now?
Any nutrients?
Was the temp still near 26c when the activity stopped? Temp is a potential culprit, but can’t say for sure because your description of the temp is quite vague.

Otis
Otis’ Pot and Thumper, Dimroth Condenser: Pot-n-Thumper/Dimroth
Learning to Toast: Toasting Wood
Polishing Spirits with Fruitwood: Fruitwood
Badmotivator’s Barrels: Badmo Barrels
StillerBoy
Master of Distillation
Posts: 3387
Joined: Thu Dec 01, 2016 6:27 pm
Location: Ontario

Re: Long fermentation time

Post by StillerBoy »

Karooboy wrote: Sat Jul 25, 2020 7:18 am Followed all the steps, any reason why
What does that mean, as it would seem not so.. what sugar wash was it, recipe..
Karooboy wrote: Sat Jul 25, 2020 7:18 am The first several days was re wally cold weather, then I moved them inside with a heater.
That's a big issue with fermentation.. yeast prefer a stable temp.. beside, if it's a sugar wash, there is probabaly a Ph issuse, as the acidity level in a sugar wash will crash rapidly in the begining..

Mars
" I know quite certainly that I myself have no special talent. Curiosity, Obsession and dogged endurance, combined with self-criticism, have brought me to my knowledge and understanding "

– Albert Einstein
User avatar
gwizard
Novice
Posts: 68
Joined: Wed May 13, 2020 5:30 am
Location: AUS

Re: Long fermentation time

Post by gwizard »

Sometimes it just takes time due to env conditions.

For example, my latest wash was put 14 days ago at 1060. I checked 2 days ago, 1000. But still bubbling, so I just let it run its course.
It's winter for me, so ambient fluctuates between 19c and 7c.
Fermenter is temp controlled (heating belt + inkbird controller)

Same wash, same yeast, same setup - 4 months ago - 3 days to drop below 1000.

Wash happens ;-)
Thear
Novice
Posts: 5
Joined: Tue Jul 07, 2020 9:25 am

Re: Long fermentation time

Post by Thear »

I have been doing a couple of sugar washes the last year and fermentation time was always around 12 days for a 100l wash.

My last couple of washes i did with some crushed coral and it cut it down to around 5 days. PH was definately my problem.

End result much cleaner and faster.
dukethebeagle120
Site Donor
Site Donor
Posts: 754
Joined: Wed Jul 27, 2016 11:08 am
Location: french canada with good vermont neighbors

Re: Long fermentation time

Post by dukethebeagle120 »

OtisT wrote: Sat Jul 25, 2020 8:29 am What was your starting gravity? Where is it at now?
Any nutrients?
Was the temp still near 26c when the activity stopped? Temp is a potential culprit, but can’t say for sure because your description of the temp is quite vague.

Otis
I am with otis
The bread yeast i got won't work under 90 degrees around 30c
I would check that and add some crushed shells
Then see what happens
its better to think like a fool but keep your mouth shut,then to open ur mouth and have it confirmed
User avatar
still_stirrin
Master of Distillation
Posts: 10344
Joined: Tue Mar 18, 2014 7:01 am
Location: where the buffalo roam, and the deer & antelope play

Re: Long fermentation time

Post by still_stirrin »

Sugar wash, huh? Did you get the recipe off of the internet? Or possibly a YouTube video?

I sense a couple possible problems:
-> 1) no nutrients...sugar doesn’t provide the necessary nutrients for yeast to metabolize sucrose, so you need supplements,
-> 2) if it does start fermenting, chances are the pH will fall as acids are intermediary byproducts of the reduction of sugars,
-> 3) inadequate aeration for proper yeast budding (reproduction) early in the fermentation cycle...low yeast population,
-> 4) bacterial contamination overtaking the wash ahead of active yeast, causing spoilage instead of fermentation.

Since you noted the gravity has not dropped appreciably and it still tastes sweet, I venture a guess your yeast was not healthy and the culture is not working. Bacteria will take hold soon, if not already, especially as you “fiddle” with it.

Give us more details of what you did and the recipe you followed.
ss
My LM/VM & Potstill: My build thread
My Cadco hotplate modification thread: Hotplate Build
My stock pot gin still: stock pot potstill
My 5-grain Bourbon recipe: Special K
Sulaiman
Novice
Posts: 43
Joined: Wed Jan 18, 2017 6:36 pm

Re: Long fermentation time

Post by Sulaiman »

It seems to me that the pH of a sugar wash always drops at the beginning of a fermentation when there is oxygen dissolved in the water and the yeast multiply.
Adding calcium carbonate powder after the second day of fermentation to raise the pH to about 5 allows the yeast to ferment the sugar quite quickly, to completion.
If, as an experiment, I aerate the fermentation after a few days then the pH will drop again.

If the fermentation gets too cold then the yeast hibernate,
but if the pH gets too low then the yeast dies.
So, check the pH, if below 4 add base/alkali to raise the pH to about 5, and add fresh yeast.
Either lots of yeast, ot aerate the wash and correct the pH again in a day or three.
Karooboy
Novice
Posts: 23
Joined: Wed Jul 01, 2020 9:09 pm

Re: Long fermentation time

Post by Karooboy »

StillerBoy wrote: Sat Jul 25, 2020 9:40 am
Karooboy wrote: Sat Jul 25, 2020 7:18 am Followed all the steps, any reason why
What does that mean, as it would seem not so.. what sugar wash was it, recipe..
Karooboy wrote: Sat Jul 25, 2020 7:18 am The first several days was re wally cold weather, then I moved them inside with a heater.
That's a big issue with fermentation.. yeast prefer a stable temp.. beside, if it's a sugar wash, there is probabaly a Ph issuse, as the acidity level in a sugar wash will crash rapidly in the begining..

Mars
So if im gonna use baking soda ri bumo up ph, what amount would i start withon a 25l wash
Setsumi
Distiller
Posts: 1377
Joined: Tue Sep 07, 2010 10:23 pm
Location: Central South Africa

Re: Long fermentation time

Post by Setsumi »

rather use chauck, the stuff teachers write on the board... but it is better to put it in from the start
My first flute
My press
My twins
My controller
My wife tells me I fell from heaven covered in white. Why did they let me fall?
User avatar
NZChris
Master of Distillation
Posts: 13102
Joined: Tue Apr 23, 2013 2:42 am
Location: New Zealand

Re: Long fermentation time

Post by NZChris »

Setsumi wrote: Sun Aug 23, 2020 11:12 pm rather use chauck, the stuff teachers write on the board... but it is better to put it in from the start
Someone very recently posted his disaster using chalk. Kicked the can over and started again.
Setsumi
Distiller
Posts: 1377
Joined: Tue Sep 07, 2010 10:23 pm
Location: Central South Africa

Re: Long fermentation time

Post by Setsumi »

my experience is chalk in the form of sticks works well, it buffers like shells. it only disolves what is needed. but it works better when put in at the start.
My first flute
My press
My twins
My controller
My wife tells me I fell from heaven covered in white. Why did they let me fall?
Post Reply