I brewed my second batch of beer yesterday, which happens to be my first all grain brew as well. Through a combination of things such as a slightly low mash temperature and maybe a bit too course of a grind (I am doing a sort of BIAB approach but with a sparge) I ended up a little low on both my pre-boil and post-boil gravity readings. What is the concern of having a lower than expected OG? I understand that the ABV will probably be on the low side, but what other implications are there?
I’m not too concerned about it right now as I am expecting this to be a learning process, just curious more than anything.
Also, is it common practice to bump the gravity up with some DME pre-boil or even post-boil to get to the target gravity? In the end I am guessing I should bump my grain bills up a little if my readings stay on the low side.