It is an alcoholic extract of the cannabis plant, often referred to as "green dragon". Typically made by soaking the dried flowers of the female hemp plant in ethanol. Sometimes, it can derive their cannabinoids from leaves and stems soaked in alcohol, not just flower.
Ordinarily absorbed sublingually, under the tongue, so the cannabinoids go directly to the bloodstream. They can be mixed into foods and drinks, such as smoothies, salad dressings, and soups.