Good Evening! Knocked out brew #5 today and all went well...except dammit if I didn't forget the Whirfloc!
So my original gravities were off a bit from what Beersmith predicted and is now showing a 55% mash efficiency.
Est. Pre-Boil Gravity- 1.043 (Measured was 1.046)
Est. Original Gravity- 1.049 (Measured was 1.050)
Just to clarify, I took the pre-boil a minute or so after the boil began. I took the OG reading after everything was in the fermenter and I shook it up a bit. Also, not sure if it's important or not, I had to stir the mash for about 10 minutes to bring the temp down and I added 2 glasses of ice cubes (maybe that was enough to throw off some volumes).
Is this efficiency number WAY off?