I brewed a Rye IPA yesterday with about 40% rye malt, 5% cararye, and 55% 2 row malt. I used my normal calculations for sparge water to get my target pre boil volume, but came up a good bit short. I was aiming for 8 gallons, but only got about 7.4 gallons. My efficiency was also a little low, which I expected with the amount at rye I used. The only water loss I can come up with is that the rye adsorbs more water then barley does. There was no extra liquid in the mash tun when I emptied it, and I had no issues with a stuck sparge (I batch sparge in a 10 gallon igloo cooler). Has anyone else seen higher water adsorption with rye?
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