Is this culture okay? - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Lambic & Wild Brewing > Is this culture okay?

Reply
 
Thread Tools
Old 01-20-2014, 04:15 AM   #1
marqoid
Recipes 
 
Feb 2010
Tucson, Arizona
Posts: 66
Liked 1 Times on 1 Posts



This was supposed to be a culture from the dregs of a beatification batch 6.
It was a basic low gravity wort from DME with the dregs from a single bottle pitched ~6 weeks ago into a 1 quart mason jar. Initially it looked fine, but it has developed a green mold.
Will the mold be taken care of by acid or do I need to trash it?

 
Reply With Quote
Old 01-20-2014, 03:42 PM   #2
ColoHox
Compulsive Hand Washer
HBT_SUPPORTER.png
 
ColoHox's Avatar
Recipes 
 
Oct 2011
Fort Collins, CO
Posts: 1,882
Liked 411 Times on 291 Posts


You have to get rid of that.

You didn't describe your process, but when stepping up bottle dregs, you use small volumes to start, then increase (usually by a factor of 10) until you have the proper pitching amount. For example, bottle dregs would go into 10ml of low gravity wort, then after a day or two, the culture would be stepped up to 100ml of wort, then a liter. By putting very low numbers of cells of interest (yeast or bacteria) into a large volume of wort, you increase your chances that a contaminating organism will outgrow your cells.

Dregs from one bottle into a quart of wort for 6 weeks is a recipe for contamination, sorry to say.
__________________
Bacteria are the only culture some people have.

 
Reply With Quote
Old 01-20-2014, 08:01 PM   #3
marqoid
Recipes 
 
Feb 2010
Tucson, Arizona
Posts: 66
Liked 1 Times on 1 Posts


Quote:
Originally Posted by ColoHox View Post
You have to get rid of that.

You didn't describe your process, but when stepping up bottle dregs, you use small volumes to start, then increase (usually by a factor of 10) until you have the proper pitching amount. For example, bottle dregs would go into 10ml of low gravity wort, then after a day or two, the culture would be stepped up to 100ml of wort, then a liter. By putting very low numbers of cells of interest (yeast or bacteria) into a large volume of wort, you increase your chances that a contaminating organism will outgrow your cells.

Dregs from one bottle into a quart of wort for 6 weeks is a recipe for contamination, sorry to say.
Thanks, that's what I thought. This was a little impromptu, I wasn't planning on using these dregs to start with.
In the past I have successfully fermented a full 5 gallon batch by pitching dregs from 2 bottles, I guess I got lucky.

 
Reply With Quote
Old 01-30-2014, 03:35 PM   #4
sweetcell
HBT_SUPPORTER.png
 
sweetcell's Avatar
Recipes 
 
Jan 2012
Rockville, MD
Posts: 5,082
Liked 950 Times on 692 Posts


Quote:
Originally Posted by marqoid View Post
In the past I have successfully fermented a full 5 gallon batch by pitching dregs from 2 bottles, I guess I got lucky.
you pitched the dregs of 2 bottles, only?!? no other yeast to help out? that seems ridiculously low. you must have great sanitation!
__________________
What hops should I grow? Looking for cheap honey?
- Drinking: BPA made with ingredients from NHC, 2 blends of a rye sour: ECY20 + ECY34, local sour cherry kriek #2, brett'ed Belgian blond on raspberries
- Aging: Imperial Chocolate Milk Stout (half on coconut), sour blond on second-use cherries, English Barleywine (half on brett), 3726 saison w/ brett x2 (dregs mix & Lochristi), GNO 3724 saison w/ brett mix, sour cherry mead, acerglyn, and a few other sours...

 
Reply With Quote
Old 02-01-2014, 02:30 AM   #5
marqoid
Recipes 
 
Feb 2010
Tucson, Arizona
Posts: 66
Liked 1 Times on 1 Posts


Quote:
Originally Posted by sweetcell View Post
you pitched the dregs of 2 bottles, only?!? no other yeast to help out? that seems ridiculously low. you must have great sanitation!
I like to think so
1 bottle of Petrus aged brown and 1 bottle motherfunker.
The beer came out great. Fermentation took off within 24 hours and even blew off my carboy.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
What culture to use ChaosStout Lambic & Wild Brewing 6 05-25-2013 07:44 PM
please help i.d. this culture MrHookah209 Fermentation & Yeast 5 05-05-2013 12:29 AM
Culture Vials brewmatersmike For Sale 25 05-30-2012 06:38 PM
Just got a starter culture...where do I go from here? camiller Kombucha & Fermented Tea Forum 4 02-24-2012 07:41 PM
Have a yeast culture, now what? Hugh_Jass General Techniques 7 04-08-2009 02:20 PM


Forum Jump