Horseradish or armoracia? A hot plant with a tangled history

Studying the history of how we use horseradish is difficult because it has often been confused with the radish and types of mustard. Many like its pepperiness with meat and fish, a taste imported from Central and Eastern Europe but known and enjoyed, even mixed with wine, in classical Greek and Roman times. It has become an important symbol in at least one major religion. It is not a registered herbal medicine but many claims have been made about its therapeutic uses.