Our whole chaga mushroom and white birch bark is sustainably wild harvested from birch trees in the pristine forests of Maine USA. Our whole chaga mushrooms include the important black outer crust, which cultivated chaga does not grow. The combination of whole chaga and the white powdery substance on white birch bark provides optimal health-supporting benefits and is a natural source of revered betulin. Each 2oz bottle contains 28-56 servings of 1/4 to 1/2 teaspoons and contains 30-40% alcohol. Herb/solvent menstruum ratio 1:4