Normally I brew all-grain in electric kettle with braid filter fitted to the kettle. During mash-in and mash-out a grain bed forms on lower parts of the kettle covering braid filter. When it comes to filtration, grain bed stops all particles and gives high clarity of liquor.
When I read about BIAB I found it so interesting I thought I'd give it a try. All parts about mash-in and mash-out went as good as they normally do, but I got concerned little bit after. When I pulled the bag out of the kettle liquor was far from clear and looked more or less like mud. Braid filter was all sticked with small particles forming mud. I had to put my bag with malted grains again into the liquor to create a grain bed, as what happens in my normal brewing method, and clean my filter - then i got usual clarity level.
It all was quite of exhausting, but finally I think I must had done something wrong about BIABing, so here are my questions:
1. Should liquor after pulling bag out be muddy? If not, what did I miss that it happened?
2. Do you use mechanical stirrer or stir with wooden brewing spoon?
3. My bag has a bottom with little holes, their diameter is about 3 mm (0,3 cm) - are they too big (that is how it looked when i bought it, nothing was modified)? Should i get/make a new bag?
If you have any questions that could possibly make me close to solve that problem, feel free to ask.
