Plant tinctures are concentrated extracts prepared in alcohol. Clef des Champs takes the greatest care in their manufacture, using only fresh plants from their own organic gardens, harvested at the height of their potency. They only use the most active parts of the plant and transform them immediately in their workshops and they only use certified organic grain alcohol, a traditional solvent for this type of preparation. Used in the right proportions, alcohol is the most potent solvent known, as well as being the most appropriate and flexible. Tinctures are easily prepared and transported, act rapidly and will keep for a number of years.