I brew on an electric stove, have two pots (8.5 Gal & 5 Gal) and two bags. I have 2 small problems with my planned brew. Problem 1 is the BIABAcus says that my larger pot is too small to mash all the grains. I can deal with this by splitting the grain between 2 bags and doing 2 simultaneous mashes with both pots. Problem 2 is that it says I won't reach my target OG with the grains I have for the batch. The estimate is close enough that I will likely do the 2 bag, 2 pot mash as I described in the interest of a shorter brewday.
This all got me thinking about ways to increase effiency for future higher gravity brews. I'm guessing that it would raise effiency to mash the full grain bill in the larger pot, squeeze the bag, and then transfer the bag to the 2nd pot (dunk sparge?). Maybe this would only really help higher gravity brews. If so, when does it start to become useful (ie 1.070+?). How would this affect total mash time? 90 minute for both pots, or shorter for the second pot due to the grain already being saturated?
Maybe I should just go buy an extract kit
Jack