If you're a hay fever sufferer who also loves Japanese food, this remedy will please. Wasabi, that pale-green, fiery condiment served with many Japanese dishes, is a member of the horseradish family. Anyone who has taken too big a dollop of wasabi (or plain old horseradish) knows that it makes sinuses and tear ducts spring into action. That's because allyl isothiocyanate, a constituent in wasabi, promotes mucus flow.
The tastiest way to get those allyl isothiocyanates is by slathering horseradish on your sandwich or plopping wasabi onto your favorite sushi. Another option -- although harder to swallow -- is to purchase grated horseradish, and take 1/4 teaspoon to alleviate allergy symptoms.