I went with the original recipe until I can try this for myself. Can I get some guidance on how to calculate my efficiency? This was my first AG, and I did a BIAB. I measured preboil gravity at 1.041 @ 170F, and again postboil at 1.089 @ 70F.
According to this calculator, I seem to have ended right about the right spot... does this mean I hit 70% efficiency? If so, do I thank the double milled grains or just dumb luck??