During my brew yesterday and possibly my 3rd brew in a row, I have noticed my efficiency has dropped. I used to get close to 75% - 80% when all-grain brewing. I was excited for that. I base most my recipes for 75% and was hitting my number like 8 brews in a row. The last 3 brews I have missed my number.
I don't crush my grains, I have the store do it when I buy it. I know crush has a lot to do with efficiency, but I am wondering how much. I actually bought some grain at another store (sorry paul) to see if their crush gave me any better results. The answer was basically no. But that doesn't mean it wasn't the crush. I have been getting like 65% efficiency recently and was wondering if it is something I may be doing.
I have a mill on my need to get list. But until then, I am wondering if crush is the case or not. What else may cause efficiency to drop like that?