technobabble66
Meat Popsicle
Wow. Mash at pH5.1 seems pretty low. Isn't 5.2-5.5 preferred? I normally target 5.3-5.4 myself.
Sparge at pH3?? I could be wrong, but i think i've been targeting the same as the mash: ~5.4. Why are you targeting pH3?
FWIW, i don't think the mash pH should affect the extraction efficiency so long as the sparge pH is roughly in the right range. I *think* the only issue is maintaining a sufficient acidity to minimise the extraction of tannins (and mineral content helps a bit, i believe). I also (previously) thought the temperature made a larger difference in extraction efficiency of the sparge; however, i think i've read about a few (pro?) brewers doing some testing with cold sparking and found no/little drop in efficiency.
Sparge at pH3?? I could be wrong, but i think i've been targeting the same as the mash: ~5.4. Why are you targeting pH3?
FWIW, i don't think the mash pH should affect the extraction efficiency so long as the sparge pH is roughly in the right range. I *think* the only issue is maintaining a sufficient acidity to minimise the extraction of tannins (and mineral content helps a bit, i believe). I also (previously) thought the temperature made a larger difference in extraction efficiency of the sparge; however, i think i've read about a few (pro?) brewers doing some testing with cold sparking and found no/little drop in efficiency.