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4 users commented in " Steeping Grains for Extract Beer Brewing "

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Lee said,
in August 22nd, 2009 at 6:23 am

I always adjusted the PH of the water used to seep the grains to a PH of 5.2. Anthing higher may extract unwanted tannins and other off flavors from the grain. Do you think it is appropriate to do this?

admin said,
in August 22nd, 2009 at 6:54 pm

Unless you are mashing, the pH is less important. It becomes very important for mash conversion, but when brewing extracts that use steeped grains, the pH does not matter much since you are not really converting sugars, but only creating a type of tea to capture color/flavor.

Ryan said,
in September 13th, 2009 at 10:44 am

I’d heard that pH is an important factor in phenolic/tannin extraction — that you don’t want to let your mash pH get too high, or you will start to draw tannins and other phenolics out of your grains.

I assume the same would be true of grain steeping, so I always add my extract before steeping (to keep the pH low, and avoid excessive tannin extraction).

This is just what I’ve read and heard, I haven’t done side-by-side comparisons. Anyone with more legitimate chemistry background care to comment?

admin said,
in September 13th, 2009 at 2:11 pm

Ryan,
I believe the fear of tannins/phenolics occurs primarily when mashing and not steeping. Mashing requires a balanced pH (if you do a search you will find an article on this) of around 5.2. However since you are not extracting sugars from steeped grains this is less of a concern when steeping. That being said, obviously if you select grains that are high in tannins/proteins some of them will be extracted into the beer via steeping. However the pH is a much less important factor in this process than with mashing.

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