Remove any yellow leaves and discard the stems that are too large to be used in soups or salads.
watercress sprigs can be added to any salad. For soups and purees, you can grind the raw or lightly cooked watercress soup, milk or water. Cooking destroys some of the nutrients it contains, but that they taste less harsh on the palate, maintaining its characteristic peppery flavor. 
Currently, mustard and cress are often used as garnish on sandwiches, either alone or spread with butter, and sometimes accompanied with slices of cucumber or avocado. Watercress ingredient would probably not be substantial enough in itself
only in a salad, but with its own distinctive flavor can give life to many simple green salad that otherwise might be a bit bland.
are also excellent as an ingredient in tomato salad, dressed simply with a basic vinaigrette of olive oil and vinegar flavored with tarragon.
