Horseradish

Horseradish is known for its strong pungent odor and flavor, used mainly as a condiment; it must be grated and mixed with vinegar or lemon juice.

Encyclopedia of Foods. A Guide to Healthy Nutrition

Horseradish has been used for more than 3,000 years for its pungent flavor and medicinal properties.

Store unopened horseradish in a cool, dry place. Once opened, refrigerate and use within three to four months for the best flavor.