Author Topic: Converting all grain to extract.  (Read 491 times)

Offline jim atlas

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Converting all grain to extract.
« on: September 17, 2016, 08:02:01 PM »
So, I've been brewing for about nine years-- but never have used extract.  Oddly enough, I'm wanting to (don't ask).    Question is, how do I convert my recipe to use extract in place of base malt? 
So I'd use 27# base malt and 3# Crystal in a all grain brew and get 15.5 gal at 14.5°.  No if I'm using extract, would I steep those same 3# to get the same flavor profile of 9.9% in a mash?
When choosing grains to add in with extract, how do I determine the amount to use?
Not sure if this makes sense...

Offline denny

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Re: Converting all grain to extract.
« Reply #1 on: September 17, 2016, 08:11:42 PM »
Yeah, step the crystal malt you were using for AG.  To replace the base malt, use the lightest DME you can get.  That way you know they won't have added extra grain.  DME has about 45 ppg., so base the amount to use on that and your OG.
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Offline santoch

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Re: Converting all grain to extract.
« Reply #2 on: September 18, 2016, 01:27:36 AM »
What I do is take my AG efficiency, multiply it by the ag weight of the base malt in lbs and multiply that by 35 (max extraction for the grain). 
So, as an example if I have 10 lbs of 2 row, and my efficiency is 75%, i figure I'll have 10x.75x35   = 262.5 gravity points.
Take that number and divide it by 45 (because extract packs 45 points per pound) and that will give you the number of pounds of extract you need to replace the 2 row

in this case,  262.5 / 45 = 5.83 lbs.  of pale DME.
(If you are using LME, divide by 36 instead.)
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