The soil, type of tree grown, amount of sunshine and for that matter the amount of rain during the growing season all play their part in determining the flavour of the oil. A variety of olive trees are grown in Italy each with their own particular characteristics. The majority of the olive trees grown in Tuscany are Frantoio, Leccino, Pendolio, Maurino, Moraiolo and Taggiasca. The best type of soil to plant them in is clay or good loamy soil with plenty of drainage, although it is true that olive trees can still thrive in difficult conditions there is no guarantee of a reliable crop each year. It is essential that the trees have good irrigation throughout the growing season in order to maximise their yield. Olives crop, on the previous year’s growth; therefore, annual pruning is essential for maintaining the health of the tree, ensuring an annual crop and encouraging an even fruit set throughout the tree.
Ten things you should know about olive oil
1 - Just like wine, olive oils are awarded different labels and grades depending on their taste, production methods, origin and chemistry. For example, in Italy the same labels as wine are awarded to olive oils: ‘Protected denomination of origin’ (DOC) and ‘denomination of controlled origin’ labels (DOCG).
2 - Olive oils are classified by taste through a blind taste test, which is carried out by a panel of professional tasters.
3 - When you buy ‘Extra Virgin’ olive oil, this means it is produced without the use of any chemicals, contains no more than 0.8% acidity and is judged to have a superior taste. Virgin olive oil is also produced solely by the use of physical means and its acidity is less than 2%, with a good taste.
4 - Research suggests that eating around 2tbsp of (virgin or extra virgin) olive oil a day can improve cholesterol regulation, reduce the risk of coronary heart disease and it has even been linked to prevention of cancer. This is because it is packed with anti-oxidants and has a high content of mono-saturated fatty acids.
5 - Olive oil is the only vegetable oil that can be consumed freshly pressed from the fruit, without the use of solvents.
6 - Some of the world’s best extra virgin olive oil comes from the Chianti region of Tuscany where single estate bottled oils are the most sought after and expensive of all. For a first-hand experience, it is possible to stay in a villa in Tuscany where this type of oil is produced from olive trees on the grounds.
7 -The olive harvest needs to be timed perfectly to ensure the acidity levels are just right for it to be graded as extra virgin.
8 - Cold pressed olive oil means the olive pulp created during the olive production process is pressed below 27 degrees to ensure the minimum flavour is lost. It is of better quality than olive oil that has not been cold pressed.
9 - Light, heat and air reduce the quality of olive oil, so it is best kept in a sealed, tinted glass bottle and stored in a cool place.
10 - Unlike wine, olive oil does not get better with age. Good quality olive oil should be used within a year. Lower grade oils only have a shelf life of a few months.