azscoob
Brewpub coming soon!
This is the first beer I'll brew on my new system (i have an actual kettle and mash tun now instead of a single pot BIAB system) and I have a question about the water amounts.
Are the amounts listed prior to heating or after heating? I'm assuming the 3.58 gallons of water for the mash is room temp water and not the amount at mash temp. Is that correct?
If that's the case, then it looks like I'll need 8.33 gallons of cold water to start with for a 5 gallon batch?
Without getting too crazy detailed, all measurements are calculated and are at room temp. I use basic figures when figuring my water volumes, my keggle boils off 1.5 gallons per hour at my usual boil vigor, I use a grain absorption rate of .1 gallon per pound of grain in the recipe, this recipe has a 1.30:1 mash ratio so we can calculate the mash water volume easy enough as well... If I want 5 gallons in my fermentor, I boiled off 1.5 gallons, and lost 1.1 gallons in grain absorption, that's 7.6 gallons needed.... If you assume some left in the kettle (trub loss) and mash tun loss, I'd guess you are safe at 8.3 gallons if it's looking a little short during the boil, either shorten the boil, or reduce boil vigor. If it's a bit high towards the end of the boil, either boil longer or increase boil vigor to boil off to the desired volume.
If that helped, awesome! If you need an explanation that isn't that convoluted, maybe I can rephrase it to actually make sense, it's early in the morning and I just woke up!