The Great Bottle Opener Giveaway

Home Brew Forums > Wine, Mead, Cider, Sake & Soda > Cider Forum > Gravity Increase after Cold Crash/Purple Yeast?

Reply
 
LinkBack Thread Tools
Old 12-17-2012, 04:31 AM   #1
jcharlson
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2012
Location: Eugene, Oregon
Posts: 5
Likes Given: 3

Default Gravity Increase after Cold Crash/Purple Yeast?

Hey,
So I went to keg 3 batches of cider today and right before pumping into the kegs I decided to take another gravity reading, thinking it wouldn't change and if it did that it would go down slightly. To my surprise, one of them went up 4 points and the other two went up 3 points.

What would explain a gravity increase after crashing?

Also, there was a mistake made when I put a pear cider into 1st, and that was that the blowoff tube came out of the bucket of water, leaving it open to potential for bacterial growth. I noticed in the yeast ring around the top of the carboy that some of the wet yeast looked very slightly purple, while the dry yeast right next to the wet was tan/brown as normal. It just makes me wonder if something has gotten in there and made it potentially unsafe to drink. Thoughts?

Thanks!

__________________
jcharlson is offline
 
Reply With Quote Quick reply to this message
Old 12-17-2012, 04:50 AM   #2
CvilleKevin
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2007
Location: Charlottesville, VA
Posts: 1,250
Liked 75 Times on 37 Posts
Likes Given: 2

Default

Quote:
What would explain a gravity increase after crashing?
the temp of the juice is colder
__________________
CvilleKevin is offline
 
Reply With Quote Quick reply to this message
Old 12-17-2012, 05:05 AM   #3
Leadgolem
Drunken Monkey
HBT_SUPPORTER.png
Feedback Score: 1 reviews
 
Leadgolem's Avatar
Recipes 
 
Join Date: Jul 2012
Location: Denver, Colorado
Posts: 3,716
Liked 958 Times on 735 Posts
Likes Given: 1763

Default

Quote:
Originally Posted by CvilleKevin View Post
the temp of the juice is colder
That was what I was thinking. Did you temp correct both readings?

As for your purplish yeast, I doubt it's a problem. There isn't much that can survive fermentation that will hurt a person.

EDIT: On second thought, save some of that purple stuff and run it by it's self. It would be extremely interesting to know if that was something that was living, or just a color compound that concentrated from your cider.
__________________
Quote:
Originally Posted by Remmy
I'd rather work with yeast than work with people.
Leadgolem is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cold crash yeast 24hrs karljrberno Fermentation & Yeast 1 01-19-2012 01:02 AM
Harvesting yeast. Cold Crash? enohcs Fermentation & Yeast 1 05-24-2011 10:35 PM
Cold Crash Secondary - Enough Yeast? bechard Beginners Beer Brewing Forum 2 05-15-2011 06:16 PM
Re-using yeast cake after cold crash; possible? Dubcut Fermentation & Yeast 4 10-23-2009 09:06 PM
do I need more yeast after cold crash? bjdetwiler Bottling/Kegging 5 01-30-2008 08:50 PM