I'm going to ask Santa for a BIAB bag and give this a go after Christmas.
I realise I can calculate the efficiency after I've done the brew, but what sort of efficiency am I likely to see using BIAB on my first go?
I'm just trying to work out how much grain I'll need while trying not to get too many or too few IBUs.
Everyone's first go is a bit of a stab in the dark. I always get at least 80% now but I crush it very fine. If you are using pre-crushed grain I would imagine your efficiency wont be wildly different to your current set-up. But you will have to wait and see I reckon.