Maize for processing into kenkey is cleaned to remove all foreign matter. This is done by one or a combination of several processes including winnowing, hand picking, sieving, and sedimentation. These operations remove dust, chaff, stones, insect-damaged grains, and other debris. The sedimentation process involves pouring the grains into a big basin of clean water, stirring with a wooden ladle to allow the mature and good-quality grains to settle at the bottom while the less dense immature, some insect damaged, and diseased grains float on the surface. The latter are collected with small baskets or sieves and used as animal feed. The good maize is then washed again in water before steeping.
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