Directions for use decoction : the content of 2 level tablespoons in half a liter of cold water. Then boil slowly for 15 to 20 minutes. Strain (sweeten with honey if necessary), sip. Infusion : the content of one level tablespoon in a teacup; pour boiling water, then leave under the lid for 20 to 30 minutes. Strain ( sweeten with honey if necessary), sip.