Best grind??

[Tex2Ten]

This weekend I will be doing a 2 gal BIAB Maris Otter/Cascade SMASH. Anyonewith BIAB experience or knowledge, what's the best grind for my grains in order to achieve the best efficiency? Seems like a finer grind would be better.

 

[kh54s10]

With BIAB you can crush much finer than you can with most other systems. You might end up with more debris in your wort but given time and/or clearing agents it will settle out of solution giving you a pretty clear beer.

 

[boydster]

I keep my Cereal Killer set to the finest setting, and I've been getting around 80% efficiency with it for most beers (full volume, no sparge mash).