In soil, most of the zinc stays bound to the solid particles. When high levels of zinc are present in soils, such as at a hazardous waste site, the metal can seep into the groundwater. Industries also can release dust containing higher levels of zinc into the air we breathe.
Add sorghum to a large pot of water. Use one cup of whole grain sorghum to three cups of water. Bring to a boil, reduce to a simmer and let cook for approximately 40-55 minutes or until the sorghum is tender. Drain any remaining liquid and serve.
The United States is the world's largest producer of sorghum. While Americans do use sorghum, India and parts of Africa consider it a particularly valuable food source. Milling the grain like wheat to make flour is one way to use sorghum; however, this is not one of the better-known uses of the crop.