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.
Some are made to be used with cannabis flowers, some with hash or wax, and some are made to be used with oil cartridges. The vape pens used with dried marijuana flowers and concentrates like hash require a person to load the cannabis product into the corresponding vape pen chamber. This means that the person using the pen knows exactly what it being loaded into it. The vape pens designed to be used with oil cartridges are a little bit trickier because the cartridges are most often purchased pre-filled with the marijuana concentrate liquid.