The quality of olive oil is characterized through three criteria : acidity, peroxide index and the absence of default.
The acidity : it represents the amount of oleic acid in 100 grams of olive oil. The lower is the acidity in the olive oil, the higher is quality of this olive oil. one of the conditions for olive oil to be classified as "extra virgin" is to have acidity rate below 1% (1 g of oleic acid out of 100g of olive oil).
The peroxide index : it provides information on its conservation,durability. For an extra virgin olive oil, the rate must be less than 20.
The optimization of these three criteria is "a must" for a very high extra virgin olive oil quality. Unfortunately, those informations do not appear on labels. You have to ask directly to the producer to obtain them.
At each harvest, we analyse our olive oil. For the harvest 2012, analysis of our extra virgin olive oil made on december 2011 are :
- Acidity rate : 0.28 %
- Peroxide index : 3.3
- No default
Conservation of extra virgin olive oil
Our extra virgin olive oil is a high quality olive oil which means conservation will allow you to enjoy all its benefits longer (antioxidants, vitamins ...).
Olive oil does not get better with time. Kept in good conditions, protected from light, with minimal contact with air and at a temperature around 18 ° C, olive oil is stable for several months. If you buy olive oil in can (5 Liters) after opening pour the olive oil in dry bottles. Indeed, in contact with water (although very little), the olive oil will quickly spoil. Prefer opaque bottles or metal cans.
The olive oil mill