Rubarb

Rubarb is a perennial that is usually considered a vegetable in the United States. They have large leaves that are somewhat triangular. They have small flowers grouped in large compound leafy greenish-white to rose-red inflorescences. In culinary use, fresh leaf stalks are crisp (similar to celery) with a strong, tart taste. Most commonly, the plant's leaf stalks are cooked with sugar and used in pies and other desserts. The Rubarb root produces a rich brown dye similar to walnut husks. It is used in northern regions where walnut trees do not survive.