Rhubarb has a tart flavor and pairs well with strawberries, apples, cherries and berries. It can be canned, frozen, baked in pies, cobblers and breads. When purchasing rhubarb, choose thick, firm stalks with no wrinkling or other signs of drying. If there are leaves on the stalks, they should be fresh and not wilted. Rhubarb is known for its diuretic and anti-inflammatory properties. Rhubarb contains about one-third of your daily calcium needs, as well as potassium, folate and iron. The red stalks of rhubarb are full of the immune-boosting photochemical, anthocyanin.