Greengrocer turned Masterchef host Gregg Wallace reminisces about his love of rhubarb and can't understand why sales and production have plummeted. He heads to Yorkshire, the home of forced rhubarb, to meet plucky growers who continue with their traditional labour-intensive methods and who have triumphed in the face of adversity. In the Revival kitchen, Gregg aims to prove that rhubarb has far more to offer than just the filling for good old-fashioned crumble.Meanwhile, Ainsley Harriott wants us to remember the taste of a fresh pea straight from the pod. There is no doubt that peas are popular but over ninety percent of those we grow are frozen. Ainsley argues that we're missing out on one our homegrown treats if we don't eat them fresh when they're in season. Even HRH Prince Charles is rooting for the fresh pea, as Ainsley discovers when he visits the kitchen garden at Highgrove House.