When Horseradish Goes Bad?

It's quite easy to tell if your fresh horseradish root is spoiled or not. If there's mold, discard it. Same thing if it feels soft and mushy, or smells off. If it has some tiny black specs, you can cut them out.

How do you know if horseradish is bad?

CAN expired horseradish make you sick?

What's more likely to happen is that your horseradish will become bland over time, lose its pungency, and can even start to taste bitter. While it may not be unsafe to consume at this point, your cocktail sauce won't taste very good.