Foie gras
In 2005, France produced 18,450 tonnes of foie gras (78.5% of the world's estimated total production of 23,500 tonnes) of which 96% was duck liver and 4% goose liver. Total French consumption of foie gras in this year was 19,000 tonnes. In 2005, Hungary, the world's second-largest foie gras producer exported 1,920 tonnes and Bulgaria produced 1,500 tons of foie gras.
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.