there is a type of pumpkin called the "oil pumpkin "the oil is extracted by roasting and pressing the seeds of this type of pumpkin which is grown in australia, the oil extracted from the hulless seeds of thirty pumpkins yeilds four cups of oil. this oil is becoming popular with chefs because of its nutty flavour. but it has potential as a source of oil from biofuels it is easy to grow and very prolific.
marc
