Very interesting question, actually. On an ideal brew-day, a GF brewer just jugs his 15L or so slowly and gradually so as to fill in the time it takes the system to get up to boiling.
So rarely is reality like this. For the last n number of brews, I have ended up with cut-out issues related to fine grain crushes.
Yesterdays sparge was so sticky. that when the GF cut-out at 90C, I just took the top plate off and stirred up the grain, with the remaining sparge water dumped in in 2 or 3 goes. Pushing the whole wort through a BIAB bag and boiling the grain-free wort up in two boilers - GF and Peco finally worked.
I do think that grain is now crushed for the BIAB / microbreweries preferences - very fine for efficiency.
So rarely is reality like this. For the last n number of brews, I have ended up with cut-out issues related to fine grain crushes.
Yesterdays sparge was so sticky. that when the GF cut-out at 90C, I just took the top plate off and stirred up the grain, with the remaining sparge water dumped in in 2 or 3 goes. Pushing the whole wort through a BIAB bag and boiling the grain-free wort up in two boilers - GF and Peco finally worked.
I do think that grain is now crushed for the BIAB / microbreweries preferences - very fine for efficiency.