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Old 05-21-2010, 11:06 PM   #1
Apr 2010
Posts: 33
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I have been getting some conflicting information regarding my partial mash recipe. Will the Rye malt be able to convert itself in the mash or will I need to reduce the DME and add 2 row?

Original Recipe:

63% 5 0 Extra Light Dry Extract
13% 1 0 Rye Malt
13% 1 0 Munich Malt
6% 0 8 Honey Malt
6% 0 8 Victory Malt

Possible Substitution:

33% 3 0 Extra Light Dry Extract
22% 2 0 American Two-row Pale
17% 1 8 Rye Malt
17% 1 8 Munich Malt
6% 0 8 Honey Malt
6% 0 8 Victory Malt

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Old 05-21-2010, 11:09 PM   #2
Mar 2009
Posts: 2,607
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its my understanding that base grains like Munich malt have conversion power you are looking for. i could be wrong.

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Old 05-21-2010, 11:52 PM   #3
944play's Avatar
Jul 2008
Santa Rosa, CA
Posts: 2,726
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Briess rye malt can self-convert and indeed has some surplus diastatic power. Like wheat, rye doesn't have a husk so lautering a mash with more than 50% of it (and no rice hulls) can be a problem, but you've got plenty of barley in that grist.
OD: ?
Keg: Simple AIPA (2-row, Chinook, Cascade, WLP090)

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Old 05-21-2010, 11:53 PM   #4
Jan 2010
Minneapolis, Minnesota
Posts: 555
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944play beat me to it!

I might add however, Weyermann Rye Malt's DP is 62, just barely enough for itself and an equal amount of grain, in which case you might want to add some 2-Row just to be on the safe side and sure all the starches are converted.

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Old 05-23-2010, 01:50 PM   #5
david_42's Avatar
Oct 2005
Oak Grove, Oregon, USA
Posts: 25,599
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The rye, Munich and Victory can all self-convert. The honey malt can't. so plan on testing the conversion with iodine and maybe mash for more than an hour.
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