Priya S

Black spots on onions are usually caused by Aspergillus niger, a common fungus that grows in warm, humid storage conditions. Are They Safe to Eat? Superficial mold: If the black spots are only on the dry, papery outer skin and the inner onion is firm, crisp, and smells normal, the onion is generally safe to use. Just peel away the affected outer layers and wash the bulb well under running water. On Reddit, opinions on safety are mixed, with most users agreeing it is safe after peeling, though some advise discarding it entirely. When to throw it out: Throw the onion away if it feels soft, mushy, slimy, or smells unpleasant. Cooking does not always destroy the toxins (mycotoxins) that heavy mold can leave behind Health risks: People with asthma, mold allergies, or weakened immune systems should be extra careful, as inhaling loose spores or eating spoiled onions can cause irritation or illness.