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Olive Oil

Information about Olive Oil plus Olive Oil Recipe collection


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Some say that the best olive oils come from the Mediterranean,  but whilst countries such as France, Greece, Italy,  and Spain all produce fine specimens, olive oil is also produced in many other countries such as Argentina, Australia, Egypt,  Israel,  Lebanon,  South Africa,  Tunisia, Turkey and New Zealand, with the largest producers worldwide being Spain, Italy, Greece, Portugal, Tunisia, Turkey, Syria.




Origin and History of Olive Oil


Olive oil is one of the oldest culinary oils. The olive tree is native to Asia Minor and was first thought to be cultivated in Syria about 6,000 years ago. It spread to the rest of the Mediterranean around 5,000 years ago and was being grown in Crete by 3,000 BC. 


Both scriptural and classical writings refer to both the oil and the tree as  as a symbols of goodness, purity, peace and happiness. According to legend,  the first olive tree grew on Adam's tomb and don't forget olive branch brought to Noah on the ark  signaling the end of the flood. 


In addition to its  culinary use,  the oil was burnt in the sacred lamps of temples, while the victor in the Olympic games was crowned with its leaves and by the time they were established in Egypt, they were so highly prized that  the great Tutankhamen had olive branches placed in his tomb. 


The use of olive oil spread rapidly around the Mediterranean and across the ancient world and has been a foundation of the Mediterranean diet for thousands of years.


Cultivation and Processing of Olive Oil



Before we can talk fully about olive oil, mention must be made of the tree which produces the fruit from which it is extracted. Olive trees have a life span of 300 to 400 years and grow to a height of 6m/20 feet or more. Depending on the variety,  they produce fruit varying from green to black however, olive oil is only made from green olives and just as with wine, the flavour, colour, and consistency vary due to different olive types, location, and weather. 


In order to achieve the finest quality olive oil, the fruit must be harvested at its optimum stage of ripeness and pressed within 72 hours. The best harvesting method is hand picking, but this is labour intensive which is reflected in the price. The reason for this is to prevent the fruit being bruised in the picking process which causes tartness and higher acidity.  



Once picked, the traditional method of obtaining olive oil starts with the  crushing the washed and stemmed olives with huge stone wheels, however this has been surpassed by  commercial hydraulic machinery in many instances.  Whether traditional or modern, the process remains the same. Once crushed the paste is pressed, ensuring heat isn't allowed to build up as this affects the flavour (cold pressing),  then the resulting liquid is separated into water and oil, nowadays often using a centrifugal separator. 


The resulting oil from this first pressing is the best quality and designated the name "Extra Virgin". That's the basics, but olive oil grading is much more complicated so below are listed some of the types of oil with a brief explanation of the standards that have to be achieved for each type.



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Grades of Olive Oil

Olive oil is graded according to its flavor, colour, and aroma, as well as its acidity. As mentioned above, many factors contribute to the overall quality, but below are the basic requirements for each type.


Premium Select (fine) Extra-Virgin Olive Oil 

This is the crème de la crème of olive oils.  It has a rate of acidity which is less than 1% with some as low as .225%. This level of quality is achieved through hand harvesting and cold pressing within 24 hours, thus ensuring the highest degree in both quality and taste.


Extra-Virgin Olive Oil

Any olive oil that is less than 1% acidity, produced by the first pressing of the olive fruit through the cold pressing process can be classed as an extra virgin oil but a word of warning - many extra virgin olive oils are extra virgin in name only, meeting only the minimum requirements. 'Extra virgin' is a chemical requirement that does not necessarily indicate quality or taste. In general, the deeper the colour, the more intense the olive oil flavor.


Virgin Olive Oil

This is made from olives which are slightly riper than those used for extra-virgin oil. Whilst it is still unrefined, it has a slightly higher level of acidity (1-1/2 to 2%) and is generally milder than extra virgin olive oil.


Pure Olive Oil

This is solvent-extracted from the olive pulp, skins, and pits then refined (also called commercial grade oil).   It is lighter in colour and blander than virgin olive oil. The word "pure" refers to the fact that no non-olive oils are added. Other than that, its mediocrity is such that it's really not a worthy competitor for cupboard space.



Buying and storing Olive Oil

A personal note from the Editor:  

"Reluctant though I am to say it, in view of the above complexities in the production  of "good" olive oils, apart from visiting the growers and producers,  the easiest way to ensure you buy a top grade olive oil is to buy the most expensive you can afford. I say reluctant, because there's nothing to stop unscrupulous retailers charging what they like in the hope that we'll all think we're buying the best. Having said that, buying an oil labelled "Extra-Virgin" will suffice for most of our culinary needs. "

When buying olive oil in bulk,  transfer into smaller containers, preferably to a  dark-coloured bottle as air, heat, and light will cause olive oil to turn rancid. Always store in a coolish, dark place and be sure containers are tightly sealed.  Avoid  plastic containers as the oil can absorb PVCs. 


In very cold conditions, olive  oil may turn cloudy and even solidify, but it will clear again as it warms up, so cloudiness should not be taken as an indication that the oil isn't still usable. Olive oil can be refrigerated but doing so will cause it to congeal and turn cloudy although it should not affect flavoUr. 

Olive Oil and Health

Due to its fatty acid composition, olive oil has a beneficial impact on controlling cholesterol levels and thus has a unique part to play in the prevention of cardiovascular disease.


It is also believed that antioxidant substances such as vitamins E, K and polyphenols which are found in olive oil, delay aging and prevent carcinogenesis, liver disorders and inflammations.  It is very well tolerated by the stomach and is believed to lower the incidence of gallstone formation as well as promoting bone mineralisation, and is therefore excellent for those who have bone calcification problems. 


All in all, a superb ingredient as far as health benefits are concerned.



Olive Oil in Cooking


Cooking with olive oil is like cooking with wine: never use an olive oil that does not taste or smell at its best. 


Since olive oil is not distressed during extraction,  it's very stable, especially for frying. Contrary to common belief, deterioration when frying is much lower in olive oil than in other oils. Try adding a little olive oil to the pan when a recipe calls for frying in butter. A higher temperature can be achieved with less fear of the butter burning.


Also like wine, different flavours of olive oil are best suited to different uses. As a general guide, use a milder olive oil with grilled fish,  raw, cooked or steamed vegetables, soups and pasta sauces and use the fruity, stronger olive oils with grilled meats, pastas, cooked vegetables, cheeses and Bruschetta. But most of all EXPERIMENT.


Olive oil can also be used very successfully in baking, replacing or reducing the need to use butter or margarine.




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