Why do I need less priming sugar when bottling a colder beer? - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > General Beer Discussion > Why do I need less priming sugar when bottling a colder beer?

Reply
 
Thread Tools
Old 09-30-2009, 03:31 PM   #1
Q2XL
 
Q2XL's Avatar
Recipes 
 
Feb 2009
Eastpointe, Michigan
Posts: 509
Liked 3 Times on 3 Posts



I will be bottling an American Wheat today. I usually bring the carboy out in the garage the night before bottling to let everything settle before I bottle the next day. I brought the carboy outside last night and it got down to about 45F last night and right now it is 49F. So, I know that you need to use less priming sugar when the beer temp at bottling is colder.

Beermith says that bottling at 50F requires 4.13 ounces compared to 5.20 ounces at 70F. Why the big difference in amount of priming sugar when bottling cold? The beer will be at 70F after it is bottled.


 
Reply With Quote
Old 09-30-2009, 03:34 PM   #2
weirdboy
HBT_LIFETIMESUPPORTER.png
Recipes 
 
May 2009
Los Angeles
Posts: 8,186
Liked 483 Times on 391 Posts


Because colder beer absorbs and retains more CO2. While your beer is fermenting, there's a constant supply of CO2 that bubbles through it that creates the airlock activity. Some of this CO2 doesn't make it to the surface, but stays in solution in the beer. More of it stays in solution at colder temperatures.

 
Reply With Quote
Old 09-30-2009, 03:50 PM   #3
HairyDogBrewing
 
HairyDogBrewing's Avatar
Recipes 
 
Feb 2008
Mechanicsburg, PA
Posts: 571
Liked 5 Times on 5 Posts


There's a discussion about this in the Science forum.
If your beer is still fermenting, it will reach a new CO2 equilbrium at the lower temperature.
I don't think this would happen overnight, so I would use the previous temperature to calculate priming sugar.

 
Reply With Quote
Old 09-30-2009, 05:17 PM   #4
Q2XL
 
Q2XL's Avatar
Recipes 
 
Feb 2009
Eastpointe, Michigan
Posts: 509
Liked 3 Times on 3 Posts


Thanks. I went and searched for the link. They sure explored the idea of priming sugar in that thread. Wow!

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
On priming sugar and Bottling Tech. KPatrick Bottling/Kegging 10 11-12-2012 04:46 AM
Priming sugar, bottling space... voberoi Beginners Beer Brewing Forum 5 10-08-2009 03:01 AM
I want to use yeast rather than priming sugar for bottling fastricky General Techniques 29 04-15-2009 05:32 PM
Question about priming sugar and bottling mioduz Beginners Beer Brewing Forum 16 01-16-2009 09:23 PM
Bottling Gingerbread Ale - Priming Sugar? Wheat King Bottling/Kegging 2 10-18-2006 11:56 PM


Forum Jump