Coast to Coast Food Festival episode 16: Edith Bowman and Colin Murray explore the Nairn Show to find tips and treats among the food stalls, including how to spot the perfect egg and how to choose the juiciest berries. Baker Briony-May Williams discovers bargains when using an app designed to reduce food waste. Farmer Meinir Howells gets to grips with turning rapeseed into oil in Rhuthin, and chef Suzie Lee finds out whether there’s such a thing as a healthy bacon sandwich.