Flour fineness information for milling

[Guest guest]

Hi

I am looking at purchasing a grain mill and I spoke to a company who makes

mills with Natural Granite stones.

They advised me that IF I wanted they could make the stones such, that I

could mill an even finer flour than normal. Obviously it would take longer.

What are the advantages of extra fine flour for breadmaking as well as any

other uses, eg cakes etc. I could mill most grains including corn (not oily

grains)

Hope this makes sense.

Many thanks