Quote:
Originally Posted by c0bra
Are there not enough enzymes in the specialty grains to break anything down at those temps?
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Most specialty grains are steeped (not mashed) so there aren't really any enzymes converting anyway- but at 175 degrees any enzymes that would have been available would have been denatured. That's way too high for a mash temperature, and really high even for a steeping temperature.
If you want to extract fermentables, don't go over 155 degrees. The "sweet spot" is 149-158 degrees, but in order to extract fermentables from the grain you have to have the correct type of grain, and the correct amount of water.
In order to steep grains, you can be in the 145-155 degree range without worrying too much about how much water/what type of grain.