Watercress and Sorrel Soup
Tangy sorrel gives a refreshing edge to this smooth soup, while the croutons add crunch. If you can't find sorrel, use another bunch of watercress and one tablespoon of lemon juice instead.Plus: More Soup Recipes and Tips
Sorrel is a perennial herb with a sour flavor. It is shaped like spinach, but the color of the leaves ranges from pale to dark green. Look for sorrel with bright, crisp leaves. The stems should not be woody. While sorrel is available year-round, its peak season is the spring, when it's at its mildest.