Raymond Blanc can not understand why we are not eating more trout as it's both sustainable and delicious. He casts his rod in the river Wye after being given permission by the landowner to fish for Wild Rainbow Trout. Then in Camarthen, Wales, he takes trout to the people to see how well they know their fish and in the revival kitchen he cooks three tasty trout dishes to encourage us all to seek out this fabulous fish.Mary Berry is on a mission to revive one of her most favourite foods, ice cream, after discovering that just two and half per cent milk protein is required to name a product 'ice cream'. She wants us all to go back to basics and learn how to make real dairy ice cream. She uncovers some of the earliest ice cream secrets by exploring a 19th century ice house and confectioner's kitchen at Syon House and then goes to University College London to brush up on her ice cream chemistry. Equipped with an old fashioned street seller's bike and her home-made dairy ice cream, she tackles holiday makers on Eastbourne's seafront to convert them to her cause.