Quality is a product of care and attention: in the case of olive groves the choice of fertilizer is crucial, this is a very delicate moment in the nurture of all plants. The Colonna olive groves are treated using natural fertilizers together with compost produced on the estate. The main pruning season is the winter, this revitalizes the plants, while light summer pruning is carried out selectively. In the hot summer months the trees are watered with a droplet system, decisive for the survival of the plants and for the optimum development of the fruit, thus avoiding stress through lack of water, which can compromise the growth and productivity of the plants.
The skill to recognize the correct moment to harvest is one of the most important aspects of olive farming, as many experts say that quality “is made in the field”. In Southern Molise, the olive reaches the onset of ripeness, which is the ideal point to begin harvesting, at the beginning of October and this is when harvest starts.
Only at this precise moment does the olive contain a high percentage of polyphenols, which will provide the main characteristics of the oil: its longevity and anti-oxidant properties. Teams of six expert harvesters work hard with pneumatic combs helping the olives to fall from the trees into the nets below. Table olives on the other hand are always harvested and selected by hand.
ARRIVAL AT THE MILL
At last the olives reach the mill where they are put into large open bins so that the air can circulate and avoid fermentation. Within 12 hours of harvest, the olives begin the transformation process. They are weighed and then tipped into a huge funnel sending them into the machine that removes the leaves and twigs, which inevitably get picked together with the fruit. The olives are then washed and conveyed into the mill.
There are two fundamental requisites for the extraction of a good quality oil: rigorous control of the grinding time and of the water temperature that must be below 27°C at all times.
The olives are milled using a disk crusher which turns them into an “oil paste”, made up of oil, water and solid parts. This paste is then ground inside stainless steel tanks for about half an hour (the exact time depends on the olive variety), which facilitates the dissolution of the oil molecule. The separation of the solid and liquid parts is carried out in a three-phase centrifuge which separates the oil, the solid waste (pomace) and the water.
The oily substance flows into the separator where it undergoes a last separation between water and oil, now ready for consumption. The pomace will be used as an ingredient for the compost and the waters are spread on the soil, according to the existing rules regarding agricultural waste.
The oils obtained from the different varieties are stored in stainless steel vats under nitrogen, each variety is kept separate until it is used for the final blend.
The freshly harvested olives are processed together with the grind of organic lemon. Oranges, tangerines and bergamot are instead chopped and then milled together with the olives. The same process occurs with ginger, cardamom and leaves of basil grown in our garden.
MANUFACTURING PROCESS – BOTTLING AND LABELLING
The vats lead to the bottling area where a team of four tireless ladies work, bottling the oil by hand. Their years of experience show in the skillful way they label, seal and box the bottles for the orders that are sent around the world. The “anfora” bottle containing Colonna oil is a registered patent, the brand name is also covered so that there is no chance of counterfeit. The bottle shape was inspired by an ancient anfora of the family collection. It is a way to further distinguish the product from the many other oils, and this way the bottle itself tells the long, complex story that is entwined around this estate and the Colonna family.
THE IMPORTANCE OF A GOOD PRODUCTION PROCESS
Each stage of production, from tending the plant to extracting the oil, is important to achieve a high quality extra virgin olive oil that has all the fundamental olfactory characteristics, flavour and health benefits, making it an indispensable part of our everyday healthy diet and crucial for the prevention of common illnesses.