I’ve encountered mouldy chocolate a few times, and it’s essential to know how to spot it. When chocolate goes bad, it develops white or grayish-green spots on its surface. These spots are the mould, and they can be fuzzy or powdery in texture. Sometimes, the chocolate might also change color entirely, looking off and unappealing. In my experience, I’ve noticed that the smell changes too. Instead of the usual sweet aroma, mouldy chocolate can have a musty or unpleasant odor. It’s crucial to check chocolate before eating, especially if it’s been stored for a while. If you ever see those odd spots or notice a strange smell, it’s best to throw the chocolate away to avoid getting sick.