Lay out tulsi sprigs and leaves in a single layer on a clean dish towel or drying rack. Allow to sit for one full day to wilt.
Once the herb is wilted, heat water to 190 degrees F or just below boiling.
Place the wilted tulsi in a quart canning jar. Pour the hot water over the herbs. Cover the jar with a lid or plate to capture the volatile oils.
Steep at least 15 minutes.
Strain if desired and drink, or cool further, pour over ice, and enjoy.