Biodiesel is an option fuel like traditional or ‘fossil’ diesel. It can be made from straight vegetable oil, animal oil/fat, tallow, and waste cooking oil. The method used to transform these oils into biodiesel is known as transesterification. Biodiesel has many environmentally valuable properties. The essential benefit of biodiesel is that it may be described as ‘carbon neutral.’ Biodiesel is quickly biodegradable and non-toxic, meaning spillages constitute much less threat than fossil diesel spillages. Biodiesel has a better flash factor than fossil diesel and is more secure in crashes. The International Energy Agency states that biofuel demand will expand 38 billion liters over 2023-2028, a nearly 30% growth from the last five-year period. Total biofuel demand will rise 23% to 200 billion liters by 2028. Renewable diesel and ethanol account for two-thirds of this growth, and biodiesel and bio-jet fuel comprise the rest.