I've had a number of frustrations in my homebrewing activities since around 2018. One of these has been that since switching back to the brewing setup I used then, my brewhouse efficiency is considerably lower than it was before then. After attending HomeBrewCon 2020 (virtually, of course), I learned quite a bit about mashing that I didn't know before. I'm hoping that learning will pay off with some efficiency improvements in upcoming batches. For this recipe, I'm testing two variables - grain crush and sparge-to-mash water ratio. I've switched out my three-roller mill (which is hard to gap) for a two-roller mill and gapped it to match the recommended "thin as a credit card" gap. For this batch, I'm attempting to reach as close to a 1:1 mash-to-sparge water ratio (and going back to heating the sparge water as well). If the brewhouse efficiency gets closer to my goal for this batch, I'll know I'm on the right track. If not, back to my note...