I have been brewing a while but I have been going off LHBS recipes. I am trying to learn about efficiency and all that good stuff. I usually hit my OG/FG pretty well. I do BIAB. My question is; do i not need to worry about efficiency until I start making my own recipes or is efficiency used to help your technique? Since I have never really worried about it and I hit my numbers I figure it's mainly for recipe creation, right? (I'm not sure if I phrased this question correctly.)