The process of separating grains from the chaff in ancient cultures is called wind winnowing. It was an important step in the harvesting process that allowed people to separate the edible grains from the inedible parts of the plant. This process was done by using the power of the wind to blow away the lighter chaff while leaving the heavier grains behind.

The process of wind winnowing can be broken down into the following steps:

1. Harvesting: The first step in the process is to harvest the crop. This involves cutting the plants at the base and collecting them in bundles.

2. Threshing: The next step is to thresh the crop. Threshing involves beating the plants with a stick or using a threshing machine to separate the grains from the rest of the plant.

3. Winnowing: Once the grains have been separated from the rest of the plant, the next step is to winnow them. This involves tossing the grains and chaff into the air and letting the wind blow away the chaff while the grains fall back down.

4. Cleaning: The final step in the process is to clean the grains. This involves removing any remaining bits of chaff or debris from the grains.

Overall, wind winnowing was an essential process in ancient cultures that allowed people to separate the edible grains from the inedible parts of the plant. It was a labor-intensive process that required a lot of physical effort, but it was necessary for obtaining food and ensuring a successful harvest.

Wind winnowing of course .You separate Beans and chaff the same way also maize and chaff.No difference