A practical, easy and quick way to determine the onset of monsoon practiced by the people of Choryana Muvada village in Gujarat. The aerial root of the banyan tree serves as a practical moisture indicator during the monsoon. In this practice, when the tip of the aerial root is snipped off, if several drops of water flow out, it indicates the likelihood of good showers in the very near future, probably within a couple of days. Given the hygroscopic nature of aerial roots one can expect them to serve as a crude indicator of relative humidity.
Ingredients: The aerial root of the banyan tree