Hey all!! Long time reader, first time poster. I need help understanding why my efficiency is so horrific. Its been several brews now where ive missed my OG by more than 10 points. Some times more than 20 points! I just brewed the below recipe, and my pre-boil gravity was a shocking 1.020...

Hi folks, I’ve done a few batches with GrainFater (G30) already and I’m looking for a reliable way to measure the mash efficiency (or preboil efficiency). I found different ways and they more or less show similar numbers, but still not close enough to make me feel I’m doing it right. This is...