Award winning chef Glynn Purnell delves into the history of King's Lynn's old fishing yards, before challenging the fastest shrimp peeler in town. He also goes out with the tide in Morecambe Bay to fish for brown shrimp the old fashioned way on a rusty old tractor.The Aylesbury duck is one of our oldest breeds but Masterchef presenter John Torode discovers just how close this ancient bird is to disappearing for good. At a south London school, he shows some budding young chefs the delights of cooking with duck and in the revival kitchen sets out to prove there's more to this tasty bird than a Chinese takeaway.