1 Ovo-vegetarian diets exclude meat, poultry, seafood and dairy products, but allow eggs. 2  Lacto-ovo vegetarian diets exclude meat, fish and poultry, but allow dairy products and eggs.  Pescatarian diets exclude meat and poultry, dairy, and eggs, but allow fish.
Hash oil is produced by solvent extraction (maceration, infusion or percolation) of marijuana and/or hashish. After filtering and evaporating the solvent, a sticky resinous dark liquid with a strong herbal odor (remarkably different from the peculiar odor of hemp) remains.
Hash oil can be the most potent of the main cannabis products because of its high level of psychoactive compound per its volume, which can vary depending on the plant's mix of essential oils and psychoactive compounds. Butane and supercritical carbon dioxide hash oil have become popular in recent years.