Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Attenuation?
Reply
 
Thread Tools
Old 08-05-2008, 02:54 AM   #1
jayhuff
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2008
Location: middle tennessee
Posts: 164
Liked 5 Times on 2 Posts

Default Attenuation?

Well I have read two books and have read a lot on this forum, but I still have a few questions. I think the right word for how far the SG drops is called attenuation of the yeast.

Either way, is there a certain percent of drop that is good? I have done two batches now and I haven't got either to drop under 1.010. The first batch got to 1.012 and I didn't take a OG. It was a simple ale that I just got advice on what to buy to make it.

The second is a hefeweizen that started at 1.048 and is now at 1.010 after 10 days in primary.

Is there a formula that I can use to determine how far it needs to drop before it is ideal?

Thanks for any help on this.
-Jay



jayhuff is offline
 
Reply With Quote
Old 08-05-2008, 02:58 AM   #2
FishinDave07
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2007
Location: South Florida
Posts: 1,360
Liked 2 Times on 2 Posts

Default

That sounds about right for a hefe. It all depends on the style and yeast you use. If you go to Whitelabs and Wyeast website they tell you attenuation rates. Also remember that a low atten. yeast will leave more unfermented sugars resulting in a sweeter brew, like some english yeast varieties whereas nottingham has high attentuation and leaves the brew crisp, and dry.


__________________
Primary: Nothing
Secondary: DFH Punkin Ale
Bottled/Conditioning: Cigar City Jai Alai IPA Clone, Apple Jack 1.0, Apple Jack 2.0
Drinking: Yakima Blonde (Imperialized), Banana Wheat, Russian Imperial Stout, and anything i can get my hands on
On Deck: Watermelon Wheat, Red Panda Ale, Gluten Free Brown Ale, Mojito IPA, Smoked Pepper Stout
FishinDave07 is offline
 
Reply With Quote
Old 08-05-2008, 03:00 AM   #3
jayhuff
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2008
Location: middle tennessee
Posts: 164
Liked 5 Times on 2 Posts

Default

Awesome! I used a Whitelabs WP300 for the hefe. I will check their website out.
Thanks!
jayhuff is offline
 
Reply With Quote
Old 08-05-2008, 03:05 AM   #4
FishinDave07
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2007
Location: South Florida
Posts: 1,360
Liked 2 Times on 2 Posts

Default

No problem. Just out of curiosity, what temp did you ferment at? I've heard nothing but great things about WP300.
__________________
Primary: Nothing
Secondary: DFH Punkin Ale
Bottled/Conditioning: Cigar City Jai Alai IPA Clone, Apple Jack 1.0, Apple Jack 2.0
Drinking: Yakima Blonde (Imperialized), Banana Wheat, Russian Imperial Stout, and anything i can get my hands on
On Deck: Watermelon Wheat, Red Panda Ale, Gluten Free Brown Ale, Mojito IPA, Smoked Pepper Stout
FishinDave07 is offline
 
Reply With Quote
Old 08-05-2008, 03:12 AM   #5
jayhuff
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2008
Location: middle tennessee
Posts: 164
Liked 5 Times on 2 Posts

Default

I pitched at 74 and held the temp to 68 during fermentation.

BTW- I went to whitelabs and got this formula (which is a general formula that would apply to attenuation of any yeast)

To calculate attenuation percentage, the following equation can be used:
[(OG-FG)/(OG-1)] x 100

They also said that a good attenuation percent would be between 65-85%.

Given that formula, my hefe has an "apparent" attenuation rate of 77%. It is awesome to learn more about what I am doing!

Thanks Dave!

And the WP300 went nuts within 10 hours and I got some serious blow off. I am also making 2.5 gallon batches and it was made in a 3 gal carboy. I will be using wp300 again!

jayhuff is offline
 
Reply With Quote
Old 08-05-2008, 03:15 AM   #6
FishinDave07
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2007
Location: South Florida
Posts: 1,360
Liked 2 Times on 2 Posts

Default

Cool. I fermented a hefe in 2 seperate fermenters at 2 different temps. and got completely different beers. Yeast = Amazing. How would you describe the flavors in your hefe? subdued banana/clove balance? banana? clove?
__________________
Primary: Nothing
Secondary: DFH Punkin Ale
Bottled/Conditioning: Cigar City Jai Alai IPA Clone, Apple Jack 1.0, Apple Jack 2.0
Drinking: Yakima Blonde (Imperialized), Banana Wheat, Russian Imperial Stout, and anything i can get my hands on
On Deck: Watermelon Wheat, Red Panda Ale, Gluten Free Brown Ale, Mojito IPA, Smoked Pepper Stout
FishinDave07 is offline
 
Reply With Quote
Old 08-05-2008, 03:25 AM   #7
jayhuff
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2008
Location: middle tennessee
Posts: 164
Liked 5 Times on 2 Posts

Default

That is a good question. I have only tasted it twice- once as unfermented wort (when I took the OG reading) and it tasted like a sweet tea. It was actually something I would drink chilled I think!
Tonight I tasted it when I took the SG reading and it was totally different. Not fruity, but somewhat of a clove taste and very smooth and a touch sweeter than a pale ale I made. I am still new to all this so my descriptions are somewhat limited.

I got the recipe from HOOTER, who responded to one of my post.
jayhuff is offline
 
Reply With Quote
Old 08-05-2008, 03:37 AM   #8
FishinDave07
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2007
Location: South Florida
Posts: 1,360
Liked 2 Times on 2 Posts

Default

oh, i thought you had it bottled. Trust me, hydro samples can be deceiving, at least my wheat was.


__________________
Primary: Nothing
Secondary: DFH Punkin Ale
Bottled/Conditioning: Cigar City Jai Alai IPA Clone, Apple Jack 1.0, Apple Jack 2.0
Drinking: Yakima Blonde (Imperialized), Banana Wheat, Russian Imperial Stout, and anything i can get my hands on
On Deck: Watermelon Wheat, Red Panda Ale, Gluten Free Brown Ale, Mojito IPA, Smoked Pepper Stout
FishinDave07 is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
attenuation nutcase All Grain & Partial Mash Brewing 4 04-14-2009 09:55 AM
Attenuation beerthirty General Techniques 3 02-06-2009 05:36 AM
Help with Low Attenuation newbrewerny Beginners Beer Brewing Forum 3 10-26-2008 03:11 AM
Attenuation ? Chris_Dog General Beer Discussion 31 01-07-2008 09:57 PM
attenuation???? pa-in-utah General Techniques 4 04-06-2007 12:44 AM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS