Chilled Water Celery and Cucumber Bisque

This delicate puree, herbal and fresh, suggests leek-potato-sorrel soup—and, like it, can be served hot or cold. Milky gray-green, it benefits from a brightening garnish of minced or slivered leaves. In these days of instant everything, plain old regular farina (Cream of Wheat) is difficult to locate, so I’ve compromised on the quick-cooking—but don’t use the instant.