- For other uses, see Horseradish (disambiguation).
Horseradish is a spicy substance that is a cure to Medusoid Mycelium. Beatrice Baudelaire created a hybrid between horseradish and an apple tree, resulting in bitter apples. Unfortunately, the hybrid damages unborn babies. Because Beatrice was pregnant with Violet, she could not eat the hybrid. Neither could Kit Snicket when she was infected with the Medusoid Mycelium and also pregnant with her baby.
Ishmael enjoyed apples from the hybrid.