What are black spots on cauliflower?

Black spots on cauliflower are often a sign of a fungal infection, such as black rot, which can affect the quality and edibility of the vegetable. These spots may also result from bruising, improper storage, or exposure to excess moisture. It's essential to inspect cauliflower for these blemishes before cooking or consuming, as they can indicate spoilage. If the spots are extensive or the cauliflower appears damaged, it is best to discard it.