Nothing wrong with this aamcle except for the first line of your first post. Let me talk about what is right first...
In BIAB, if you have a tall, narrow pot, you are going to experience different dynamics than a brewer with a wider, more shallow pot. In the first pot,you will need to pull more slowly otherwise the bag will act like a syringe. This will not occur in wider pots though. In other words, in certain circumstances, given the right conditions, a porous cylinder may be of more benefit than a bag.
Now, I will talk about what is wrong. (I think the below has merit but if you think I am being overly harsh please let me know.)
1. FGS, don't coin a new term
.*** I still rue the day I finalised the suggestion, "BIAB".
2. Every brewer's circumstances are different. Kettles vary. The ability to use a rope and pulley varies.
3. Cost
4. This system needs a rope and pulley if the grain bill is of any size. But, if you have that and a wider kettle, where is the advantage?
5. The bag is an almost perfect manifold as it drains from the sides and the bottom. A cylinder with a porous bottom, whilst not as bad in channelling as traditional brewing, still will have some channelling.
I think, BIAC (apart from the name), is perfectly valid if you have a narrow kettle, have a pulley and can get the 'basket'* manufactured cheaply.
Like the way you're thinking though,
PP
*** I think I have gone mad. The brewing in the basket idea has been discussed many times. Can't believe I forgot the word basket
. Search BIABrewer,info for 'basket' and a lot more will come up.
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