Hazel Leaf (Corylus L. - Corylus Folium) Health Embassy Hazel (Corylus L.) is a native tree for the temperate Northern Hemisphere. To make an infusion, 1-2 tsp of Hazel Leaf pour 200 ml of boiling water & infuse under the cover for 10-15 minutes, then strain the infusion. Please visit our Etsy shop for more: https://www.etsy.com/uk/shop/HealthEmbassyLTD?ref=profile_header This product description is for informational purposes only. It does not replace the consultation with a doctor & cannot be used as a medication or be a part of therapy. All decisions on this matter should be consulted with your doctor. Hazel Leaf/Corylus L. - Folium Health Embassy