'Virgin' means mechanical extraction, using no chemicals. Virgin olive oil is analyzed, taste tested and rated by quality: Lampante, Ordinary, Fine or Extra

Virgin olive oil with a score of at least 6.5 on a scale of 0.0 - 7.0 and an overall rating of 'no defects' are given the highest rating of 'extra'

 Lampante and Ordinary (not suitable for human consumption) get chemically refined. Refined oil is flavorless and has no quality standards stated or implied

Brands labeled 'Pure', 'Light', and 'Extra Light' are almost entirely refined or pomace oil (a residue derived from the waste of virgin olive oil)

Many brands labeled as 'extra virgin' are refined, pomace, both or other oils mixed in with a tiny amount of virgin oil