woman winnowing with traditional winnowing basket

Rusero is the word for 'winnowing basket.' It is derived from the Shona word 'sera,' which means 'to rotate or vibrate.'

Before preparing grain for consumption, the edible part is separated from the husks and chaff, which are indigestible by humans. This is done by winnowing, which involves throwing the mixture into the air. Since the chaff and husks are lighter, they will be carried away by the wind, leaving the heavier grains. The process is repeated until all the husks and chaff are removed.