Season: 7 | Episode: 5 | Length: 60m

Gregg Wallace pays a visit to the Ambrosia factory in Lifton, Devon, to lift the lid on the 400g tin of rice pudding - one of the company's best sellers. He follows the process from the preparation of the rice and the blending of the milk to filling the cans, cooking and labelling - with up to 360,000 tins produced every day. Cherry Healey finds out about the millions of tons of rice grown in Italy's Po Valley every year and Ruth Goodman looks at the history of school dinners.