Jimmy's Food Factory is back to unravel the secrets of supermarket food. Farmer Jimmy Doherty sets up his own food factory in a barn. Using farmyard and household junk, he is creating his own supermarket production line to find out what they are really doing to our food. In this episode, Jimmy tries out some of the technological tricks the food factories use to make food that's quick and easy to prepare. Turning a fire extinguisher into a squirty cream canister, Jimmy squeezes out the secrets of the cream you don't need to whip. A mangle and an office shredder come in handy when he tries to work out what makes instant noodles 'instant', and in a microwave-rice factory, Jimmy discovers how they can guarantee their pre-cooked rice is safe to eat. He also joins a lettuce grower to see how technology protects his fragile crop from the extremes of the British weather.