I buy my milk from Calder Dairy. They have a store in Lincoln Park and also offer home delivery. By "pure", I mean that they don't strip the milk down and then add stuff to build it back up. At least that is how I understand it.Btw - where do you get your milk from? And by 'pure' do you mean raw?
Raw milk can only be obtained if you own a cow share. That is something that I would like to find.