How a foundry in France produces a cast iron pot every five seconds – from the arrival of 20 tonnes of crude iron right through to brightly coloured orange casserole dishes. How a South African iron ore mine – one of the largest in the world – produces a staggering 670,000 tonnes every day. The science behind cooking the perfect casserole – more cooking time isn’t always better. The history of one-pot cooking to prepare simple meals, from communal ovens to 1970s slow cookers. How casting iron in sand moulds democratised the kitchen through affordable cookware.