The hardy mustard plant is a commonly cultivated crop in Britain, often paired with cress. Cress is a leafy green with a peppery flavor, featuring round leaves that are harvested when they are young and small. Before using them, it’s important to wash the mustard plant and cress thoroughly to remove any seed cases and grit, and then allow them to drain. These greens can be utilized in various ways, such as adding them to salads for an extra kick of flavor or using them as a garnish. In true British fashion, they can also be used as a filling for sandwiches, providing a delightful and refreshing taste.