There's no such thing as "higher requirement". Book with recipe, prep table, butcher's knife and barbecue grill need to be done only once, and not for each dish you prepare, so they simply do not count.
The only thing that counts is what is consumed *per dish*, otherwise you end up with unbalanced dishes. So 2BM takes 2 meat and 2 water, and the other two take only 2 meat.