Feed Corn or Dent Corn is a cheaper form of corn that has a "dent" in its top when it dries. This commercial corn can be yellow or white and has a higher starch content than flint corn. Feed corn is the usual variety fed to animals across the world, fattening them up quickly and cheaply, but without the flavour of cattle that have eaten grass or grains. Cornfed poultry is a more flavoursome entity, because corn is closer to their natural diet.
Dent corn and flint corn are cooked in South America with alkalis, e.g. limestone, seashells or wood ash, to release the hull and change the grain's nutritionals, better to release its niacin and protein content. This treated corn is posole, from which masa harina is milled to give tortilla flour.