How should the harvest and its aftermath be for a quality olive oil? Harvest time and post-harvest processes significantly impact the quality of olive oil, especially in terms of antioxidants and polyphenols. Here's a general guide to achieving high-quality olive oil rich in these beneficial compounds: Harvest Time: Optimal harvest time varies based on the cultivar, climate, and region but generally falls between late October and early December. For antioxidant-rich oil, harvest when the olives are in the veraison stage (when they begin to change color). At this point, they have the highest concentration of phenolic compounds. Aim to harvest in the early morning when temperatures are cooler to preserve the oil's quality. Harvesting Techniques: Hand-picking is preferable to mechanical harvesting as it minimizes damage to the olives, preserving their quality. Handle olives carefully to prevent bruising or damage that can affect the oil's quality and antioxidant conte...