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Old 05-08-2007, 05:20 PM   #1
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Default Conversion to Partial Mash

Is there a method to convert an extract/steeping grain recipe to a partial mash recipe? And is there a way to convert an AG recipe to a partial mash? I am thinking of taking the next step and can't find many partial mash recipes. And even if I do find some recipes, it would be nice to be able to convert from extract or AG.

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Old 05-08-2007, 05:24 PM   #2
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try some of the brewing software out there. Many have free trials to download. Google promash, beersmith, beertools, etc.

The beer tools one the free program is online

www.beertools.com

have fun.

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Old 05-08-2007, 06:49 PM   #3
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It is very easy to convert most recipes if you are an experienced brewer. I am not, but there are a lot here.

Post the full recipe and how you want it converted and I am sure someone will help you out.

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Old 05-08-2007, 07:10 PM   #4
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I still stand by the brew software suggestion because it is fun to play around with, but if you want to be really simple than try this.

Whatever you extract or allgrain recipe is simply keep the specialty malts the same. For making an extract into all or partial mash subistute all or part of the extract with base malts such as pale 2 row, marris otter, lager, etc. To figure this one equation is to multiply what ever amount you want to replace by 1.23 (to replace lme) or 1.45 (to replace dme)

So say you had an extract recipe calling for 6 lb of dme. To do a partial and replace say 3 lb mulitply 3*1.45= 4.35 lb. of base malt.

To go the other way... lbs. Base malt x .8125 (for using lme)
lbs. base malt x .6875 (for using dme)

I am sure there are there will be other folks who have different numbers but that is a start.

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Old 05-08-2007, 08:25 PM   #5
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Thanks. That is good stuff. I will check out the software also. Is there one that you like better than the others?

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Old 05-08-2007, 08:28 PM   #6
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You could try this: http://hbd.org/cgi-bin/recipator/recipator

It is free and fun to mess around with recipes.

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Old 05-08-2007, 11:12 PM   #7
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Quote:
Originally Posted by tbone
Thanks. That is good stuff. I will check out the software also. Is there one that you like better than the others?
well, I have been using homebrew formulator which is free. I like it fine but the down side is it is no longer being developed. The reason I use it though is that it is mac friendly and I havea mac. The only other program that is mac friendly right now is beer tools pro but I have not tried it yet. So, if you have a pc like 99% of the rest of the world you will have to get recomendations from somebody else cause i have never used the other programs out there.
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Old 03-04-2010, 01:53 AM   #8
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I'd like to make Northern Brewer's Chinook IPA as a partial mash. I have the extract/steep and all grain recipes from their website but I am new to recipe conversions. BeerSmith has helped me get this far but I thought I'd run it past you helpful folks.

Here's all grain:
10 lbs. US 2-Row
0.75 lbs. Dingemans Caramel Pils
0.25 lbs. Briess Caramel 120
0.75 oz. Chinook (60 min)
0.5 oz. Chinook (10 min)
0.5 oz. Chinook (1 min)
1 oz. Chinook Hops (dry hop)
Safale US-05 or Wyeast #1056 American Ale Yeast

And extract:
0.75 lbs Dingemans Caramel Pils
0.25 lbs Briess Caramel 120
6 lbs Pilsen malt syrup
1 lb Pilsen dry malt extract
1 oz Chinook (60 min)
0.5 oz Chinook (10 min)
0.5 oz Chinook (1 min)
1 oz Chinook (dry hop)
Safale US-05 or Wyeast #1056 American Ale Yeast

I came up with this:
Amount Item Type % or IBU
1 lbs Extra Light Dry Extract (3.0 SRM) Dry Extract 12.27 %
3 lbs 2.4 oz Pilsner Liquid Extract (3.5 SRM) Extract 38.65 %
3 lbs Pale Malt (2 Row) US (2.0 SRM) Grain 36.81 %
12.0 oz Pilsner (2 Row) UK (1.6 SRM) Grain 9.20 %
4.0 oz Caramel/Crystal Malt -120L (120.0 SRM) Grain 3.07 %

I tried to keep the specialty grains the same and I thought I'd give Northern Brewer my business since I'm using their recipe so I went with the 3.15 lb of malt extract they sell. So I guess the only difference between mine and the extract is taking out 2.85 lbs of pilsen malt extract and adding 3 lbs of pale 2-row. Does that seem ok, or should I mix it up a little more?

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Old 03-04-2010, 02:09 AM   #9
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**editing for the bad dme math i did***

Work it backwards form the all grain recipe. Keep the specialty grains like you did. Then you decided to use 3lbs of the 10lbs two row. So you have to substitute 7 pounds of 2 row with extract liquid or dry.

Nobody is going to pour you 3 lbs 2.4oz of extract that I'm aware of. The simple way at this point is .75 x 7 replace = 5.25 lme

I you want to use 1lb of dme...ok, thats 1.66 of the 7, leaving 5.33 to be replaced, x .75 = 3.99 extract.

so i'm getting

3lbs 2 row
5.25 lme

OR

3lbs 2 row
1lb dme
4.0 extract

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Last edited by VTBrewer; 03-04-2010 at 02:14 AM.
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Old 03-04-2010, 02:45 AM   #10
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Thanks for your reply. Where does the 0.75 factor for LME come from? Are you using 0.60 for DME?

The 3 lbs 2.4 oz comes from Northern Brewer - their own brand of LME comes in 3.15 lbs (no idea why) and 6 lbs.

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