The third step in wild rice processing is winnowing, which follows parching (drying) and threshing (breaking off husks) of the rice. Usually done in a lightweight, shallow tray or basket, winnowing involves sifting the rice back and forth while tossing it up in the air; in the process the outer husks are mostly blown away, leaving the heavier kernels of rice to fall to the bottom of the basket. After winnowing, stray bits of husks and other debris are picked out by hand, after which the rice is ready to eat or store!
Video courtesy of Mille Lacs Indian Museum & Trading Post. To see the process in person, visit them this Sat., Sept 18 for a live demonstration: https://www.facebook.com/events/499181197832401