where the mash's water-equivalent volume is W + c·G. A thick decoction is
conventionally pulled, so the returned figure is the water-equivalent volume
of mash, not of liquid alone.
This is the classic formula. ./decoction has the full model
The formula above assumes the tun doesn't cool while the pull is out, that
the pull comes back at a full 100 °C, and that the boil costs no water. None
of those are true, and all three push the same way: the pull comes out too
small, so the mash undershoots the rest. It also answers in heat capacity,
which you can't measure into a pot. Converting it to a pot volume needs the
pull's thickness, which this signature doesn't take.
So this calls decoctionPull with those three simplifications
applied, which gives the classic result and also tests that
decoctionPull reduces to it. New callers should use
decoctionPull or planDecoctions. This stays because it's
public API and docs/decoction.md refers to it.
Volume of mash to pull, boil and return to hit the next rest, litres.
where the mash's water-equivalent volume is
W + c·G. A thick decoction is conventionally pulled, so the returned figure is the water-equivalent volume of mash, not of liquid alone.This is the classic formula.
./decoctionhas the full modelThe formula above assumes the tun doesn't cool while the pull is out, that the pull comes back at a full 100 °C, and that the boil costs no water. None of those are true, and all three push the same way: the pull comes out too small, so the mash undershoots the rest. It also answers in heat capacity, which you can't measure into a pot. Converting it to a pot volume needs the pull's thickness, which this signature doesn't take.
So this calls decoctionPull with those three simplifications applied, which gives the classic result and also tests that decoctionPull reduces to it. New callers should use decoctionPull or planDecoctions. This stays because it's public API and
docs/decoction.mdrefers to it.