Corn smut (Ustilago maydis) infects maize and is a delicacy in Mexico, where it was historically enjoyed by the Aztecs. It grows in the ears of the corn crops and converts the kernels into black, powdery fungal tissues. The smut is sold in the markets in Mexico while other parts of the world (including the United States) continue to reject it as an ingredient for food dishes. Corn smut is currently called huitlacoche by some Mexicans, and the Aztecs formerly called it cuitlacoche. Investigators have recently found that the amount of protein in corn smut is greater than that of the corn, and also greater than that of oats and clover hay