Inside the Factory: Coffee

Gregg Wallace explores an enormous Derbyshire coffee factory, where they produce 175,000 jars of instant coffee a day. He follows the production of freeze dried instant coffee, from the arrival of 27 tonnes of Brazilian green coffee beans right through to dispatch. Meanwhile, Cherry Healey learns about the drink's chemistry and Ruth Goodman investigates its origins, visiting the site of the UK's very first coffee house which sprang up in a London churchyard in 1652