There is a particular kind of producer who looks at an already excellent process and asks: where can we do better? Not because something is wrong. Because something could be more right.
SAOV — Sociedad Agricola Ouro Vegetal — is that kind of producer. Our processing partner in Portugal, with over 100 international prizes and nearly two decades of producing exceptional extra virgin olive oil, they are not a company that settles.
To appreciate what SAOV discovered, you first need to understand what they were protecting against. Because the solution only makes sense once you understand the problem — and the problem, in this case, is invisible.
Oxygen. It is ruthless, relentless, and it never stops working.
Think about what happens to a sliced apple left on your counter. Within minutes, the cut surface browns. That is oxidation — oxygen attacking the exposed flesh, breaking it down, changing it chemically and irreversibly. Now imagine that happening inside your extra virgin olive oil, invisibly, during production. No browning to warn you. No smell. Just a quiet, continuous erosion of everything that makes the oil worth buying.
The polyphenols and aromatic compounds in high-quality extra virgin olive oil — the ones responsible for that peppery catch at the back of your throat, the ones your body uses as anti-inflammatories, the ones appearing in peer-reviewed research on cardiovascular health — are reactive. Oxygen finds them first. And when it does, they are gone. Not reduced. Gone.
To understand what serious, uncontrolled oxygen exposure does to an oil, consider canola, sunflower, and soybean — the oils sitting in most kitchen cupboards. From the moment the seed is crushed, these oils are fully exposed to air through every stage of their industrial processing — solvent extraction, degumming, bleaching — each step open to oxygen, each step erasing more of whatever the seed originally contained. By the time the bottle reaches your grocery shelf, oxidation has done its work so thoroughly that there is no meaningful polyphenol content left to speak of. These oils don't go rancid quickly on your counter because there is nothing left to oxidize. The damage was done long before you opened the bottle.
That is what uncontrolled oxygen exposure looks like at its most extreme. Now you understand the stakes. And now the story of what SAOV discovered becomes exactly what it is — a health story.
After crushing, the olive paste enters a mixing phase. And here is a mouthful worth knowing, because it keeps your mouthful of extra virgin olive oil better for you: it is called malaxation. The purpose is straightforward — olive paste is a complex emulsion of oil, water, and solids. The oil droplets are microscopic and dispersed. Gentle, slow mixing encourages those droplets to find each other, merge, and form pools large enough to be separated efficiently by the centrifuge.
Malaxation takes time. It is the longest single step in the entire production process. And it is where oxygen has the most opportunity to do its quiet damage.
SAOV's discovery was straightforward in hindsight, as the best discoveries usually are. If oxygen is the problem during malaxation, remove the oxygen. They introduced high vacuum into the malaxation chamber — drawing out all the air before and throughout the mixing stage — and in doing so, gave the oil's polyphenols, aromatics, and chemistry nowhere to go but straight into your bottle.
Polyphenols are not a marketing term. They are the biologically active compounds in extra virgin olive oil that researchers have linked to reduced inflammation, improved cardiovascular health, and protection against oxidative stress. The European Food Safety Authority recognises that extra virgin olive oil high in polyphenols contributes to the protection of blood lipids from oxidative stress. That recognition is not given lightly, and it does not apply to just any extra virgin olive oil. It applies specifically to oils with measurable, preserved polyphenol content — oils that have been protected at every stage of their production, including the stage where it is hardest to do so.
Biophenol levels are measurable. We test every oil and publish those results. The consistently high polyphenol counts in our Portuguese oils are the direct result of SAOV's determination to protect what the olive produces at the exact moment it is most at risk.
That is what makes a Portuguese extra virgin olive oil from our range something worth seeking out. Not just a different origin. An extra layer of protection. And a bottle that delivers on every number you see on our lab sheet.
The Health Centre is where we gather the process knowledge and research behind what you already feel in your kitchen. Evidence made simple, so you can cook with confidence.