Horseradish is a perennial plant of the Brassicaceae family. Mustard, Broccoli and cabbage also belong to this family.

The plant is probably native to south eastern Europe and western Asia, but is popular around the world today. It grows up to 1.5 meters (five feet) tall and is mainly cultivated for its large white, tapered root.

The intact horseradish root has hardly any aroma. When it is cut or grated, it develops an aroma.Once grated, if not used immediately, the root darkens and loses its pungency, It becomes unpleasantly bitter when exposed to air and heat.However it can be kept fresh by mixing with vinegar.

Horseradish sauce made from grated horseradish root, vinegar and cream is a popular condiment in the United Kingdom. It is usually served with roast beef but can be used in a number of other dishes including sandwiches and salads.

Also popular in the UK is a blend of mustard and grated horseradish. Prepared horseradish is a common ingredient in cocktails and in cocktail sauce. It is used as a sauce or spread on meat, chicken, fish and in sandwiches.

Horseradish is also used as a main ingredient for soups. Even in Japan, horseradish dyed green is often substituted for the more expensive wasabi traditionally served with sushi.