What is Olive oil?
[[Image:Oliven V1.jpg|thumb|right|Olive oil]] '''Olive oil''' is a [[vegetable oil]]. It is made by getting the [[juice]] of the [[fruit]]s of the [[olive tree]]. These are called [[Olive (fruit)|olives]]. The oil is used in cooking, as well as [[cosmetics]], traditional [[medicine]], and as a [[fuel]] for [[oil lamp]]s. Refined olive oil uses heat and chemicals to get the fat out of the olives.<ref>{{Cite web|date=2017-10-23|title=How Is Extra Virgin Olive Oil Made|url=https://californiaoliveranch.com/olive-oil-101-make-extra-virgin-olive-oil/|access-date=2021-05-14|website=California Olive Ranch|language=en-US|archive-date=2021-05-14|archive-url=https://web.archive.org/web/20210514132245/https://californiaoliveranch.com/olive-oil-101-make-extra-virgin-olive-oil/|url-status=dead}}</ref> Olive oil quality is defined by some parameters that are measured by chemical analysis. One of the most important is acidity. The highest quality olive oil (Extra-Virgin) must feature an acidity lower than 0.8%.<ref>{{cite journal|last1=Grossi|first1=M.|last2=Di Lecce|first2=G.|last3=Gallina Toschi|first3=T.|last4=Riccò|first4=B.|title=Fast and accurate determination of olive oil acidity by electrochemical impedance spectroscopy|journal=IEEE Sensors Journal|date=2014|volume=14|issue=9|pages=2947–2954|doi=10.1109/JSEN.2014.2321323|bibcode=2014ISenJ..14.2947G|s2cid=10659764|url=https://hal.archives-ouvertes.fr/hal-01276347/file/Fast%20and%20Accurate%20Determination%20of%20Olive%20Oil%20Acidity%20by%20Electrochemical%20Impedance%20Spectroscopy.pdf}}</ref> People see it as a healthy addition to their [[diet]] because of the high level of [[monounsaturated fat]]s (mainly [[oleic acid]]) and [[polyphenol]]s.<ref>{{Cite web|title=Chemical Characteristics {{!}} The Olive Oil Source|url=https://www.oliveoilsource.com/page/chemical-characteristics|access-date=2021-05-14|website=www.oliveoilsource.com}}</ref> Olive oil is popular in [[Mediterranean]] countries. It is a big part of the [[Mediterranean diet]] as a main fat source.<ref>{{Cit