Thai Basil - bai horapa When harvesting Thai basil, don’t remove single leaves as you need them. Pinch off the top section of a stem, stopping just at the intersection where two leaves emerge. This will prompt the plant to produce new growth branching off from the place where you removed the stem. Removing leaves individually will not achieve the same result. Rinse the leaves in cool water to remove dirt or grit and pat dry between paper towels before use.