Biodiesel can be produced
from straight vegetable oil, animal oil/fats, Tallow and waste cooking oil.
It is called Tallow, as the oil that comes out from the cow's flesh,
to make the beef Tallow and the oil that comes out of pork is called pork Tallow.
To mention a few instances, such in quiries include the Jeep Scandal( 1951), the Mundhra Deal( 1957), Import Licence Case( 1974),
and the inquiry into the steel deals and the use of beef and Tallow in the Vanaspati Case.