Winnowing is a process used to separate the edible part of grain from the chaff, which is the inedible husk. This technique is commonly employed in agriculture, especially for crops like wheat and rice. Traditionally, winnowing involves tossing the harvested grain into the air, allowing the wind to blow away the lighter chaff while the heavier grains fall back down. In modern times, winnowing can also be done using machines that mimic this natural process. These machines use fans or air currents to efficiently separate the grain from the chaff, making the process faster and more effective. This method is essential for ensuring high-quality grain for consumption and storage.