Use the freshest and best ingredients you can get your hands on for this stunning Greek salad. Nasturtium leaves are popular in fashionable restaurants, not just because they look great but also because they pack a peppery kick that’s very similar to rocket. You can sometimes get them from farmers’ markets and veg box schemes, but they are very easy to grow – we can even manage them in the car park at The Hand and Flowers! Alternatively, use fiery, young rocket leaves instead.