Several months ago I brewed a 5.5G batch of Bell's Two Hearted Clone courtesy of eschatz. Recipe here: https://www.homebrewtalk.com/f69/bells-two-hearted-ale-clone-close-they-come-91488/.
Everything went pretty well and I got a bewhouse efficiency of 67%. Since then I have really dialed in my system and this weekend brewed the same recipe save some slight changes in the grain bill. The grain bill was a bit different due to what my LHBS had in stock.
Heres the new recipe vs the old:
10# 2-row
3# CarraVienne (vs 2.5# Vienna Malt in old)
.5# Cara-Pils/Dextrine
.5# Crystal 30L (vs .5# Crystal 20L in old)
This brew day went perfectly. Hit all the temps, times etc. I was really excited about this one. I took my gravity readings, however, and my efficiency dropped to 59% . Now there is one major difference between the two batches (aside from slightly different grain bill): The grain was milled at 2 different brew stores. If anything though, this most recent grain looked finer.
So, heres the bottom line. Do you think that switch from Vienna to Carravienne or the change from C20L to C30L would cause my efficiency drop? Or is it most likely the two different mills? TIA
Everything went pretty well and I got a bewhouse efficiency of 67%. Since then I have really dialed in my system and this weekend brewed the same recipe save some slight changes in the grain bill. The grain bill was a bit different due to what my LHBS had in stock.
Heres the new recipe vs the old:
10# 2-row
3# CarraVienne (vs 2.5# Vienna Malt in old)
.5# Cara-Pils/Dextrine
.5# Crystal 30L (vs .5# Crystal 20L in old)
This brew day went perfectly. Hit all the temps, times etc. I was really excited about this one. I took my gravity readings, however, and my efficiency dropped to 59% . Now there is one major difference between the two batches (aside from slightly different grain bill): The grain was milled at 2 different brew stores. If anything though, this most recent grain looked finer.
So, heres the bottom line. Do you think that switch from Vienna to Carravienne or the change from C20L to C30L would cause my efficiency drop? Or is it most likely the two different mills? TIA