I normally do single infusion BIAB, but I'd like to try a multi-step, no sparge mash using my normal cooler. My question is whether there are any definitive water/grist ratios I need to stick to for the steps. My recipe calls for 36 quarts of water, so I was planning on adding 16 quarts for the first step (135), then 10 quarts for the 2nd (150) and 3rd steps (162).
TIA
TIA