I've brewed a few extract, partial mash and a few 1 gallon AG, but this weekend I'm going to be brewing my first 5 gallon AG. Its NB Nut Brown. Just looking for some advice to see if I have my water amounts about right. I'm going to be batch sparging, BTW and using a 5 gallon beverage cooler for my mash tun.
I'm gonna try and shoot for a 6 gallon boil in my new 10 gallon pot and using a turkey fryer burner until I can step that up. Not sure if 6 gallons is too little, but I'll top it off in the fermenter if my boil off is more than a gallon in an hour.
Here's what I'm thinking:
8.5 lbs of grain x 1.25 qts per lb = 10.625 qts mash (2.65 gallons)
8.5 x 0.1 gal/lb absorbed = 1.8 gallons absorbed
3.0 gallons wanted from first runnings - 1.8 gallons absorbed = 1.2 gallons short.
1.2 gallons added at end of mash to bring temp up to 168-170.
Collect first running and then sparge with 3 gallons (what temp should I be looking at for sparge)
Add second runnings to first, measure and see how far I'm off of 6 gallons and add water to compensate.
So does this seem about right? I'm kinda basing it off what Denny said on his website. Thanks for any help in advance.