Pure Plant Fuel 50 plant-based sachets * Caffeine-free * Active antioxidants Mamaki, an endemic Hawaiian nettle plant revered for cleansing and immunity-boosting benefits, grows wild on the Kalapana Coast of the Big Island. The plant provides a natural habitat for Hawaii’s state butterfly, pulelehua, an endemic pollinator. Our Mamaki is single-estate grown, and processed by a mother and daughter team. This 100% herbal, USDA certified organic tea offers pure healing magic.