Ever wonder how you would have cooking oil if things went bad? You could raise livestock and make butter from milk or butcher the pigs and then render the tallow to make lard but Instructables has a great idea on growing and pressing your own vegetable oil with an oil seed press.
This may be a good idea even for now to learn how and to make your own.
Grow Your Own Cooking Oil
http://www.instructables.com/id/Grow-Your-Own-Cooking-Oil/?ALLSTEPS
