Wildcrafted Birch Polypore from the north woods. Sustainably harvested from paper birch. Check out my new Blog entry at https://pilgrimagefarm.com/decoct . Available in bulk, sliced and dried at peak of growth for superior potency. With amazing microbiological content, and a plethitude of benefits, this is the best for maintaining gut balance. 1 oz brews 12 cups strong coffee and  up to 36 cups mild strength tea.