Coriander is an herbaceous annual plant, which has aroma whole through. When the fruits are fully ripe but green and start drying, the plants are harvested and dried in the sunlight for 1-2 days. This dried plant is then thrashed to remove the seeds. Seeds are further dried in the shade to bring the moisture levels down. The cleaning process involves separation of whole seeds, splits, and other wastages. To separate these, different hole-size sieves are used in the process.

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