Our Soursop Tea is green tea without the bitter aftertaste. Soursop is a type of custard apple that originated in the Americas and is now common right through Asia and the sub-continent. They use Soursop leaves as a folk remedy for blood pressure, fever, diabetes, indigestion. Whilst all those green tea antioxidants may be doing good, the calming effects of the additional soursop flavor can also make for a calming sleep aid.