Horseradish is a hot, pungent condiment made from a plant in the mustard family.
The powdered form of horseradish is made by grinding the root and drying in a gentle heat. Prepared horseradish is combined with vinegar and often other ingredients.
Fresh horseradish is available in many specialty markets or health food stores.
Selecting and Storing Horseradish
If selecting fresh horseradish, choose roots that are firm and free of blemishes and withering. Keep prepared horseradish refrigerated.