How to Make Cornmeal (with Pictures) - wikiHow
· If you don't have an actual grain mill, high-powered blenders (Blendtec, Vitamix, etc.) may also work. Standard blenders are not strong enough to grind up dehydrated corn, and you should avoid using one for this process. For preparing small amounts of cornmeal, you could also use a mortar and pestle, spice grinder, or coffee grinder.