From the HBD Archive
From: Steve Conklin <hpfcla!hplabs!amdahl!uunet!tesla!steve>
Subject: What the numbers mean (crystal 40, etc)
Date: 1989-09-11 13:32:39 GMT

roberts%studguppy@LANL.GOV (Doug Roberts @ Los Alamos National Laboratory)

> Mike Fertsch asks:
> > Is 'rich crystal' just a darker version of 'ordinary crystal'? I've
> > noticed a WIDE variation in color in crystal malts.
> So far as I can tell, it's just crystal that has been roasted at a
> slightly higher temperature. Great Fermentations sells three kinds of
> crystal malted barley: light, medium, and extra rich. Also, the
> crystal has a number associated with it: 20 for light, 40 for medium,
> and 90 for extra rich. I don't know what the number stands for,
> however.

The number refers to "degrees Lovibond", which is a measure of the amount of
color which the malt contributes to the wort. This is useful for formulating
recipes. More information can be found in Noonan's book, and in the All-grain
issue of Zymurgy. There was an article in a recent Zymurgy which described
how to measure the color of a finished beer, to see how close you are to the

BTW, I did see the request for more kegging information, and for the Rapids
number (again). The Rapids number is 800-553-7906, but things are a little too
wild for me to sit down and write much about kegging. This is my last week at
Intergraph, and next Monday I return to the life of a full-time student. I'll
still get the brewsletter, and in a few weeks, I hope I'll have time to
participate again. Meanwhile, I ran out and bought the Hunter controller for
my lagering frig, and it's perfect for the application!

Steve Conklin uunet!ingr!tesla!steve
Intergraph Corp. tesla!
Huntsville, AL 35807 (205) 772-4013

As of 9-12-89, my address will be: uunet!ingr!b11!conk!steve.

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