Foie gras
The technique of gavage dates as far back as 2500 BC, when the ancient Egyptians began keeping birds for food and deliberately fattened the birds through force-feeding. Today, France is by far the largest producer and consumer of foie gras, though it is produced and consumed worldwide, particularly in other European nations, the United States, and China.
Fonterra
Fonterra is New Zealand's largest producer of biofuel, processing a waste stream from casein manufacture into bio-ethanol. The company produces around 20 million litres of premium ethanol annually. 
Since 2004, Fonterra has produced ethanol from whey, a by-product of casein, in the Edgecumbe, Tirau and Reporoa plants. That year Fonterra's Edgecumbe plant showcased the power of its biogas, operating a 1.8 litre Hyundai vehicle on a petrol mixture containing 10 percent ethanol. In 2008, Fonterra began supplying Gull Petroleum with ethanol from its Edgecumbe plant.