Huitlacoche ( Corn Smut)

Corn smut (Ustilago maydis) is a pathogenic plant fungus that causes smut disease on maize and teosinte (Euchlena mexicana). The fungus forms galls on all above-ground parts of corn species, and is known in Mexico as huitlacoche; it is eaten, usually as a filling, in quesadillas and other tortilla-based foods, and soups.