Chard is a member of the beet family, grown for both its leaves and celery-like stalks. Red Chard has a stronger beet-like flavor than the green variety. The stalks have a crisp, delicate, celery-like flavor.
The leaves are often used like spinach and when left raw, impart a beet-like flavor. The leaves of Chard can be substituted for spinach in most recipes, while the stems work well in recipes calling for asparagus.