Horseradish is a member of the mustard family and is thought to be
original to Asia and eastern Europe. Just as with
horse chestnut, the
common name is a misnomer since the herb is toxic to horses.
People, on the other hand, enjoy the hot tang the fresh or dried root
lends to cooking. Horseradish is commonly mixed with mayonnaise, crème
fraiche or sour cream to make dips and sauces, or is added to soups and
stews. In Eastern and Central Europe, where the herb is known as khren
(or kren), horseradish sauce or cream is a popular condiment served with
pork or beef.