Extra virgin olive oil (EVOO) is highly perishable - unlike wine, it does not improve with age. In fact, a three-year scientific study confirmed that heat, air (oxygen), light, and time are EVOO’s worst enemies, causing rapid oxidation, rancidity, and loss of antioxidants if oils are not properly stored. These four factors are often summarised by the acronym H.A.L.T. (Heat, Air, Light, Time). Producers and commercial olive oil brands must ....