I see a lot of seasoned brewers stating they sparge with water with temps between 180-190 while John Palmer (and Jamil) state that you should never use water much above 170. Here's a direct quote from How to Brew:
"The temperature of the sparge water is important. The water should be no more than 170°F, as husk tannins become more soluble above this temperature, depending on wort pH. This could lead to astringency in the beer."
At first I thought maybe it was just poorly written and he meant to not let the grain bed get above 170, but while listening to a podcast with both Palmer and Jamil they state the sparge water they use is 170-175. So my question is, what do most people do for sparge water temp and if it's much above 170 do you see any of the associted issues mentioned above? The reason I ask is that I'm attempting to up my efficiency and I see a lot of people state to use higher temps while sparging but I don't want to cause more problems than I'm solving.
Thanks!
Eric
"The temperature of the sparge water is important. The water should be no more than 170°F, as husk tannins become more soluble above this temperature, depending on wort pH. This could lead to astringency in the beer."
At first I thought maybe it was just poorly written and he meant to not let the grain bed get above 170, but while listening to a podcast with both Palmer and Jamil they state the sparge water they use is 170-175. So my question is, what do most people do for sparge water temp and if it's much above 170 do you see any of the associted issues mentioned above? The reason I ask is that I'm attempting to up my efficiency and I see a lot of people state to use higher temps while sparging but I don't want to cause more problems than I'm solving.
Thanks!
Eric