Cleaning is not clean. Duck feet corn is a healthy food for human consumption, from wild plants. Duck feet corn flour with sediment is not clean, after the removal of impurities in the corn with water repeatedly wash a few times, do not excessive rubbing, so as not to lose a lot of starch in the corn. If there are impurities in the washing, remove them in time and wash until the water in the basin is bright. Duck's foot corn can be collected after the porridge can also be ground for people to eat, it is not only practical efficacy is excellent, the medicinal value is also particularly high, is the treatment of human edema of the good medicine.