Some of the best Great British produce is under threat and this exciting series is a call to action as ten of the BBC's best-loved chefs and cooks help to bring our traditional produce back from the brink. We have got the rarest, tastiest and most culturally important ingredients right here under our noses, but they are in danger of being lost forever if we do not rally behind them. In this episode, chef and proud Yorkshireman James Martin takes on the challenge of reviving the British apple. Forced off the supermarket shelves by identikit fruit that have been shipped in from as far away as New Zealand and Chile, James is determined to show off the qualities of our native varieties. He discovers that we can all play our part in the revival by checking if that tree at the bottom of the garden is one of several hundred varieties thought to be extinct. And he shows three delicious recipes that highlight the variation in flavour of this under-appreciated fruit.