Famous chef and TV host Jamie Oliver showed how chemicals turn dog-only food into human-friendly, and won a lawsuit against one of the world’s largest fast food chains, McDonalds.

The McDonald’s chain has always argued that their products are so cheap because they buy meat in giant wholesale lots. In fact, in the manufacture of filling for hamburgers they use unfoodable meat production waste, pre-washed in ammonium hydroxide to disinfect and give a "eatable" pink color.
In general, a product is taken that is only suitable for dogs, but after such treatment it is given to people.