High in rosmarinic acid, rosemary effectively treats allergies because of its antioxidant properties. "Rosemary's flavor is pungent, somewhat piney, and mintlike," says Michael J. Balick, PhD, author of Rodale's 21st-Century Herbal. "Fresh sprigs of rosemary and rosemary flowers can be steeped in vinegar or wine to add a subtle flavor. Use rosemary branches as skewers for grilling meat and vegetable kebabs."
Also keep in mind that rosemary offers other medical benefits besides clearing up your wheeze. "The herb is used primarily to treat poor digestion and appetite, joint pain, and sluggish circulation," Balick says.
A prominent part of Asian medicine and culinary garnishes, shiso is especially effective against seafood allergies—which is convenient considering that most sushi is served with the green leaf on the side (it's often holding the wasabi). Shiso is also a common treatment for bronchial asthma.