Although she’s originally from the Isle of Man, Katie Callin has never made the most traditionally Manx of all foods: the bonnag - a soda raised baked good with links to the nation’s pre-industrial past, and to its folklore too. She returns to her family home in St Johns on the west coast of the island to enter the World Bonnag Championships and, under the guidance of her mum Vanessa, she uncovers the secrets of great bonnag making.