Nasturtium and Lettuce Salad with a Raspberry and Hazelnut Dressing

The peppery leaves and brilliant flowers of the nasturtium can either be thrown whole into salads or chopped and folded into mayonnaise. They can be bought in supermarkets but are the easiest thing to grow from seed, even if you only have a flowerpot on your windowsill. This simple summer-to-early-autumn salad combines them with raspberries, raspberry vinegar and hazelnut oil. Remember that all nut oils become stale quickly, so buy the smallest possible bottles and store in the fridge. If y