Alright peeps, here' s some excerpts from my experience with the BIAB technique.
This was my:
Fourth batch of homebrew.
First all-grain batch.
First time using one of JZ's recipes (slightly molested with substitutions)
First time using my keggle.
First time using my turkey fryer. (it's never seen a turkey. only wort.)
...and of course, the first time using BIAB
Lots of firsts! It was, however, lots of fun. I've been planning on stepping up to the all-grain plate, and this method allowed me to get into it a bit quicker and a bit cheaper than I would have otherwise been able. I was also very impressed by the simplicity of the whole get-up. It actually took less cleaning and preparation than my previous extract batches. I'm bottling the stuff tomorrow, and if it turns out tasting as good as it looks, then this will become my standard method. It seems like a natural place to start for a new all-grain brewer, and a good foundation to build on for a more complex system.
Important note: there wasn't a lot of fine-tuning during this brewday - it was pretty shoot-from-the-hip. There was less of "I'd better turn on the heat so my mash temp stays exactly at 154" and more of "woooooooooo gimme another beer", so I don't have info on efficiency, or even an OG reading on the stuff. This was a 'for shits and giggles' kinda thing, but the beer that I transfered to the secondary a week ago tasted absolutely amazing. Next time I'll pay much more attention to the details, and report back with any salient info.
here are some photos:
This is me giving the grain bag a little squeeze to coax some more wort out. I had the same problem that GooberMcNutly mentioned with the wort running down the sides of the keggle. The 'lip' on the top tends to restrict the bag on its way up, and that contact allows the wort to run over the side. The only thing I could do at that point was to lift it all the way up and pretend that I never heard of HSA. I plan on modifying the design of the bag, rather than cutting off the lip of the keggle to solve this problem, since I'd like to have the ability to set the lid on it in the future.
During the (90min) boil. I'm the drunk 'tard to the left.
Cooling phase - this was also the first time using my immersion chiller. I tried to give it a bit of a whirlpool at the start of chilling, but there's an awful lot of equipment in that keggle.
So far it's worked out beautifully!