Coast to Coast Food Festival episode 4: Sean Fletcher and Edith Bowman explore Cockermouth’s food festival, meeting passionate food producers and getting tips on homemade pitta bread from a MasterChef winner. Cookery writer Michaela Chiappa discovers how seaweed is being harvested for food, and chef Julie Lin gets the low down on low-fat, semi-skimmed and full-fat milk. Chef Suzie Lee reveals how top chefs are getting creative as they reduce food waste.