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Extract/AG conversion

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7 months 3 weeks ago #2374 by MTbottle
MTbottle created the topic: Extract/AG conversion
Since Cooper's LME is not available anywhere around here, or within a couple of hundred miles of here, I thought I'd ask for your help in converting the LME and DME to grain. It seems that many of the LME's available here are supposedly made up of Maris, U.S. 2-row, or possibly Pilsner malts, so I thought that since Cooper's comes from Australia, you guys might have a pretty good idea of what grains to use, rather than us in the U.S. The recipe I'm working on is supposedly from BYO, May/June 2011:

Oakshire Brewing O'Dark:30 clone
"The Replicator"
(5 gallons/19 L, extract with grains)
OG = 1.060 FG = 1.012
IBU = 70 SRM = 25 ABV = 6.2 %

Ingredients
6.6 lbs. (3 kg) Coopers light, unhopped, malt extract
* 12 oz. (0.34 kg) dried malt extract
* 1.5 lb. (0.68 kg) 2-row pale malt
* 1.5 lb. (0.68 kg) wheat malt
* 11 oz. (0.31 kg) Weyermann Carafa® II malt (425 °L)
* 18.7 AAU Nugget hop pellets (60 min.)
(1.6 oz./45 g of 11.7% alpha acid)
* 3.5 AAU Cascade hop pellets (15 min.) (0.6 oz /17 g of 5.75% alpha acid)
* 2.9 AAU Cascade hop pellets (0 min.) (0.5 oz /14 g of 5.75% alpha acid)
* 5.25 AAU Centennial hop pellets (dry hopped) (0.5 oz./14 g of 10.5% alpha acid)
* 2.9 AAU Cascade hop pellets (dry hopped) (0.5 oz./14 g of 5.75% alpha acid)
* 1/2 tsp. yeast nutrient (last 15 minutes of the boil)
* 1/2 tsp. Irish moss (last 30 minutes of the boil)
* White Labs WLP 001 (American Ale) or Wyeast 1056 (American Ale) yeast
* 0.75 cup (150 g) of corn sugar for priming (if bottling)

Step by Step Steep the crushed grain in 2 gallons (7.6 L) of water at 153 ºF (67 ºC) for 30 minutes. Remove grains from the wort and rinse with 2 quarts (1.8 L) of hot water. Add the liquid and dried malt extracts and boil for 60 minutes. While boiling, add the hops, Irish moss and yeast nutrient as per the schedule. Now add the wort to 2 gallons (7.6 L) of cold water and top off with cold water up to 5 gallons (19 L).
Cool the wort to 75 ºF (24 ºC). Pitch your yeast and aerate the wort heavily. Allow the beer to cool to 68 ºF (20 ºC). Hold at that temperature until fermentation is complete. Transfer to a carboy, avoiding any splashing to prevent aerating the beer and add the Centennial and Cascade dry hops. Allow the beer to condition for one week and then bottle or keg. Allow the beer to carbonate and age for two weeks and enjoy your O’Dark:30.


I've always used .75/LME amount and .66/DME amount for conversion, but I've seen recipes that say that these somehow aren't the right numbers for conversion - sometimes it works, sometimes not! One person gave me some long-handled calculation that didn't make sense to me (I'm NOT a calculus major, nor much of a mathematician at all), but I do the best I can do with what I've got!
Any down-to-earth advice or calculations would be appreciated, as well as opinions as to what Coopers uses for grains for their light, unhopped, malt extract and their dried malt extract!
TIA

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7 months 3 weeks ago #2375 by Gash
Gash replied the topic: Extract/AG conversion
g'day, I have that magazine in my hands right now, off the top of my head I'd say 2-row, I'll find this recipe in the mag and see what they say
The following user(s) said Thank You: MTbottle

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7 months 3 weeks ago #2376 by Gash
Gash replied the topic: Extract/AG conversion
there is a formula on this site for dme to grain etc I'll find that for you too. But have a look at this from the magazine. prntscr.com/eewhiv

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7 months 3 weeks ago #2377 by Gash
Gash replied the topic: Extract/AG conversion

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7 months 2 weeks ago #2378 by MTbottle
MTbottle replied the topic: Extract/AG conversion
2-row .... just looked at the screenshot - good call!

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7 months 2 weeks ago #2379 by MTbottle
MTbottle replied the topic: Extract/AG conversion
Now to transfer the info in that screenshot to my BeerSmith, Thanks!

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7 months 2 weeks ago #2380 by MTbottle
MTbottle replied the topic: Extract/AG conversion
Definitely gonna bookmark that - I guess my only mistake was using .66 for DME instead of .6, which probably wouldn't have made a whole lot of difference with a small amount, but if it were quite a large amount ........ I try to avoid extracts as much as possible due to the high costs, but sometimes you just hafta use 'em, like when a supplier offers you a kit for $1 if you buy a different one for the regular price ;>)!
Thanks

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7 months 2 weeks ago #2381 by Gash
Gash replied the topic: Extract/AG conversion
No worries mate! Cheers!

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7 months 2 weeks ago #2382 by MTbottle
MTbottle replied the topic: Extract/AG conversion
So this is one of those situations where the formulas are off!
They call for 9.25 lb 2-row to replace the LME and the DME
6.6/.75 = 8.8 lb
.75/.6 = 1.25
8.8 + 1.25 = 10.05
It looks to be about 3/4 lb short by those calculations!
Any opinion?

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7 months 2 weeks ago #2383 by Gash
Gash replied the topic: Extract/AG conversion
Lots of things can effect things.. umm the differences in grain convertibility, differences in Liquid and Dry malts, differences in systems efficiency, you can't really be exact. a 3/4 pound isnt much. My advice would be to try one and see how it all goes in your system, then you can try and work out your own conversion.

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Drunken Ramblings

Finnroo's Avatar Finnroo - Mon 23 Oct - 18:36

Every thing you you need to know, is here , so sign up and brew good beer. and brew awesome beer for you and mates cheers.

Finnroo's Avatar Finnroo - Mon 23 Oct - 17:23

Well done, Wallabies beating the All Blacks.There Ive said it. Cheers.

Gash's Avatar Gash - Tue 17 Oct - 11:20

I need to do some more kits again, time poor!

Finnroo's Avatar Finnroo - Tue 17 Oct - 10:57

Just brewed a simple Brown beer kit with brew enhancer. Quick and easy.Should be good. :D

Finnroo's Avatar Finnroo - Wed 4 Oct - 11:09

Thanks Gash.

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