Most of the volatile components of medicinal plants and herbs are soluble in alcohol. By immersing dried or fresh parts of plants in alcohol, the active principles are easily extracted at concentrations that exceed those that can be achieved by infusion or decoction. Highly concentrate solutions that will last for one to two years are a convenient way to store and use medicinal plants constituents. Ideally tinctures should be made using pure ethyl alcohol distilled from cereals. However, since this product is not available to the public, good Vodka with 45-35% alcohol can be used. The extraction is fairly quick. A 50% mixture of herbs and alcohol kept in a tightly closed jar will held a tincture ready for use at the prescribed dosage. Never use methyl alcohol, methylated spirits, isopropyl alcohol or any other kind of unknown spirit to make tinctures.