I have a keggle with a false bottom. 2 gallons of water sits under the false bottom in the tun.
I made a stout yesterday with 21 lbs of grain and with 2 gallons of dead space in Beersmith it said to use 9 gallons of water which is nearly 1.7 quarts per lbs.
Now my question starts here. Does dead space in Beersmith mean i cant get 2 gallons of liquid or does that mean that 2 gallons dont touch the grain?
My next thing is that with the same brew sheet, it said that i need 10.48 gallons of wort pre boil, but afterwards I would have 7.28 gallons post boil (90 minute boil)
Why would this be with a 6 gallon batch? Shouldn't i have 6 gallons (or maybe slightly more than that) post boil? I stuck the rest of the wort in another fermenter to just make more.
So my issues are:
* does dead space mean not in contact with grain or is it that it is not drainable?
* Why would it state my post boil is 7.5 gallons when it is a 6 gallon batch?
* Finally, it says post boil gravity should be my OG according to the recipe which is 1.092. But it says that after the boil (7.28 gallons) should be 1.092.
My brewday was less than perfect (thermometer deceived me and temp was over 165
) so I would not be shocked with a lower OG but i measured 1.070 @ 72 degrees. That is a lot... i am wondering if the extra liquid is causing a bit of that.
If i boiled off another 1.28 gallons to make the 6 gallons, what would my OG have been then? Just curious.