Ethanol as a fuel is produced by fermenting materials that contain starch from grains like corn, potatoes and?

Ethanol production through fermentation requires starch or sugar-rich feedstocks. Sugarcane is a major source globally, especially in Brazil. Corn and potatoes are starch sources, while sugarcane provides sucrose directly. Yams are also starch sources but less common commercially. Greens and spices are not carbohydrate-rich enough for efficient ethanol production.