Mary takes inspiration from the herb garden. Only dried herbs were available when Mary started cooking, but these days there are an abundance of fresh herbs that can turn an ordinary dish into something spectacular. First up, Mary demonstrates her favourite summer salad - watermelon and feta with lashings of fresh mint - before turning her hand to her grandchildren's favourite comfort dish of succulent tomato and herb meatballs. Her pesto lemon chicken is easy to assemble and is perfect for a summer lunch or light dinner, as is another of Mary's dinner party favourites - salmon, potato and prawn salad platter. As well as planting herbs with her granddaughters, Mary visits the Dairy in Clapham, south London, where the chef Robin Gill opens Mary's eyes to new ways of using fresh herbs. She finishes by adding a herby twist to her all-time favourite cake - a lemon drizzle cake, which she flavours with fresh lemon verbena from her garden.