Hash oil is a concentrated form of cannabis extract made from the resin of the cannabis plant. It contains high levels of THC, the psychoactive compound responsible for the "high" associated with marijuana. Hash oil is typically produced using solvents like butane or ethanol to extract the active compounds from the plant material. The resulting product is a thick, sticky oil that can vary in color from amber to dark brown. Hash oil can be consumed in various ways, including vaporization, dabbing, or adding it to food. Due to its potency, users should exercise caution and be aware of the effects it may have.