Inside the Factory: Ice-Cream

Gregg Wallace visits a factory producing 50,000 litres of dairy ice-cream a day, while historian Ruth Goodman hops on board an ice cream van to find out how soft whip became a favourite on Britain's streets. Cherry Healey heads to an ice rink in Hull with headache expert Dr Fayyaz Ahmed, enlists an ice hockey team to test the best methods of stopping brain freeze, and also goes in search of a non-drip ice lolly