A tincture is a liquid form of marijuana, typically made from glycerin (sweeter) or alcohol (harsher). Typically, tinctures are flavored and are administered via an eyedropper. The most quickest amd most effective way for absorption is to apply the tincture under your the tongue. Most commonly listed as an edible on a dispensary menu, even though it is not actually food. A tincture takes less time than an edible for the results to be felt.