Does Fresh Horseradish Go Bad?
Yes, fresh horseradish can go bad. Once the horseradish is peeled and grated, it should be stored in a tightly closed container in the refrigerator. The horseradish will remain fresh for about 3-4 weeks if it is stored properly. If the horseradish has a slimy texture or an unusual smell, then it has gone bad and should be discarded.