I just hit ~ 50% mash efficiency with a Batch Sparge on a 5 Gallon batch, significantly lower than normal.
2 elements have changed since my last brew:
1) new grain mill
2) larger grain bill
The mash Tun is 12 Gallons (northern brewer cooler).
My assumption is that I didn't mill the grains finely enough, I have adjusted the gap between the rollers for the next brew.
My other thought is that the Tun itself is large. Is there a possibility that the initial Mash in volume was not sufficient enough for this larger grain bill in order to emerse the grains sufficiently and therefore achieve an efficient conversion? Is there a setting to increase mash in volume for Batch sparge?
2 elements have changed since my last brew:
1) new grain mill
2) larger grain bill
The mash Tun is 12 Gallons (northern brewer cooler).
My assumption is that I didn't mill the grains finely enough, I have adjusted the gap between the rollers for the next brew.
My other thought is that the Tun itself is large. Is there a possibility that the initial Mash in volume was not sufficient enough for this larger grain bill in order to emerse the grains sufficiently and therefore achieve an efficient conversion? Is there a setting to increase mash in volume for Batch sparge?