'Permeate Free' Milk

Australian Commerce: Some big milk producers start adding permeate (cheap waste product from cheese making) to milk to stretch it; then the word spreads that milk has been 'watered down' with permeate and those producers who don't use permeate start using the 'permeate free' nature of their milk to advertise it. Everyone is confused by now and the milk manufacturers add to the confusion by throwing brick-bats at each other. Another good reason to buy organic unadulterated products.

It is difficult to find unbiased coverage ... but here a good article about the milk industry.