Recipe & BOM

Hi,

Where do we maintain the relationship between master recipe & BOM so that if I have more than 1 recipe for a product than I can choose the corresponding BOM also.

In fact I am bit confused when I came across postings on SDN that says that the BOM is actually a part of Master Recipe unlike Routings in discrete manufacturing, in which case I should be able to see the BOM in Master Recipe itself.

Thanks,

Arunesh