Ajwain contains thymol, an essential oil that gives this spice its distinct aroma and taste. It is beneficial in improving digestion. Najla ajwain is mostly used in Indian cuisines in curries, dals and to add flavor to the bread. They are also used as a preservative in middle eastern cuisines like pickle, jam, and chutney.
Store in a cool, dry place. Keep in an air-tight container and away from moisture to maintain freshness.