Rishi Tea is a leader in organic, fair trade tea and botanicals located in Milwaukee. Their tea sachets are made from a plant-based, food-safe material called polylactic acid (PLA). This all-natural material is fully biodegradable in commercial composting facilities. Totally free from BPA, phthalates and micro-plastics. USDA Organic, Whole 30, Certified Kosher, Vegan and Paleo Approved Tea.