Corn Sugar (Dextrose)

Corn Sugar (Dextrose)

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Corn Sugar, or dextrose, is used to "prime" your beer to produce natural carbonation in the bottle. "Priming" is the act of adding a small amount of fresh fermentable sugar to the beer just before bottling so that the residual yeast will consume it and produce carbonation in the sealed bottle. We recommend corn sugar for this purpose because it is easy for the yeast to consume and has a neutral flavor profile, meaning it will leave your beer tasting the way you designed it!
Use 4 or 5 oz of corn sugar to prime 5 gallons prior to bottling. Dissolve in 1-1.5 pints of water and boil for 5 minutes to sanitize prior to mixing with your beer.
If your fermentation ended at 68F it will retain about 1 volume of CO2. If it ended at 50F it will retain about 1.2 volumes of CO2. 4 oz in 5 gallons adds 1.48 Volumes of CO2. 5 oz adds 1.84 volumes of CO2 to 5 Gallons.
Suggested CO2 Levels:
  • Cask Ales 1.5 to 2.0
  • Ales 2.3 to 2.6
  • Lagers 2.4 to 2.6
  • Highly Carbonated Beers 3.0+
    • Champagne is 6.3 and requires a special bottle.
To convert from volumes to g/L:
  • multiply volumes x 1.96.
Can also be used to boost your Original Gravity without impacting the beer's flavor profile. Adds 1.042 points per pound per gallon (PPG) to your specific gravity.
  • Dextros Needed (lbs.) = (Actual Volume * (Target Gravity – Actual Gravity)) / 0.042
Community Q&A

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Why did you choose this?
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I wanted the beer to carbonate
Ron A on Sep 19, 2020
We all need alittle abv boost
Jonathan Weber on Sep 14, 2020
I wanted the beer to carbonate
Ron A on Sep 19, 2020
Good stuff
troy s on Sep 15, 2020
We all need alittle abv boost
Jonathan Weber on Sep 14, 2020
To raise sugar content for yeast
scott on Sep 10, 2020
Need to carbonate bottles
Bret S on Sep 10, 2020
What choice do I have
Andrew S on Sep 8, 2020
higher alc content
Valued C on Sep 4, 2020
carbonation caps over carbonate my beers
Wesley D on Sep 4, 2020
Used Before
John B on Sep 4, 2020
I brew
Steve B on Sep 3, 2020
no comment
Paul J on Sep 3, 2020
Need it
Joseph D on Sep 2, 2020
I'm using my own hops--a lot of them--and I need something besides malt to carry them.
Merrill W on Sep 2, 2020
Bottle Priming
John D F on Sep 1, 2020
sugar prime starter for yeast and carbonation
Matthew G on Aug 29, 2020
want carbonated beer
Josh B on Aug 29, 2020
Need this for bottling
SHAILESH G on Aug 27, 2020
White IPA recipe
Adam S on Aug 26, 2020
priming sugar
Graham P on Aug 24, 2020
Need it
Joseph D on Aug 23, 2020
used before
Scott on Aug 19, 2020
for bottling
John Layton on Aug 19, 2020
for priming
Ryland Matthews on Aug 18, 2020
priming bottles
John L on Aug 18, 2020
For carbonation when bottling.
Valued C on Aug 18, 2020
convenient for bottling
Patricia R on Aug 16, 2020
I need it for carbonation.
Andrew D B on Aug 12, 2020
Kevin B on Aug 12, 2020
For the Christmas ale
Joseph G on Aug 11, 2020
easy access I have some but wanted fresh
Gary Sanger on Aug 11, 2020
Like to ferment in the bottles without having to put sugar in each bottle
ken a on Aug 7, 2020
to make bubbles
Peter R on Aug 6, 2020
I bottle all my beer
mark m on Aug 6, 2020
Need it
Kevin C on Aug 6, 2020
increase abv
Ethan H Schneider on Aug 6, 2020
Works good
troy s on Aug 5, 2020
Benjamin E A on Aug 4, 2020
Its sugar
Ryland Matthews on Aug 4, 2020
Bottle conditioning
Mark B on Aug 4, 2020
hear people like this
Damon S on Aug 3, 2020
need it
Dan D on Jul 30, 2020
Inexpensive and I need it
Shawn b on Jul 30, 2020
to make my stout
Charles J on Jul 30, 2020
Well. I need it.
Merrill W on Jul 29, 2020
my priming sugar
Carol W on Jul 29, 2020
Priming sugar
Chromebook User on Jul 28, 2020
I still bottle my beer
Andrew D B on Jul 27, 2020
recommended by a friend
Steve T on Jul 25, 2020
For White Water Hard Seltzer kit
Clinton S on Jul 22, 2020
need to finish
charles s on Jul 22, 2020
Good stuff
troy s on Sep 15, 2020
To raise sugar content for yeast
scott on Sep 10, 2020

4.9 / 5.0
32 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
It was corn sugar
The bag intact and it arrived as scheduled.
September 16, 2020
2 weeks ago
needed item
I need this for bottling, but decided to keg
September 2, 2020
1 month ago
Have been getting consistent carbonated results
August 25, 2020
1 month ago
Prime sugar!
???? perfect for bottle conditioning
August 20, 2020
1 month ago
Excelente producto muy buena calidad
August 9, 2020
2 months ago
it's corn sugar. Whats to review?
It's corn sugar. What more can I say. I haven't even reached the lagering stage yet, let alone bottling.
July 24, 2020
2 months ago
Corn Sugar
It was indeed corn sugar
July 7, 2020
4 months ago
This Corn Sugar was Sweeeeeet
This corn sugar worked exactly as expected. Perfect in my Cali IPA
June 12, 2020
4 months ago
corn sugar
worked as advertised
May 27, 2020
5 months ago
corny and sugary,finely grained,the yeast seemed to like it but declined complex comments. They just eat it up and bubble a bit. I asked them for a thumbs up or thumbs down but they don't have thumbs. They eat it much faster than they do other more complicated forms of glucose. No detectable flavor.
May 18, 2020
4 months ago