The number
643 mg/kg. Measured by a lab, not by us.
Total polyphenols are what give fresh olive oil its peppery, slightly bitter bite. Ours were measured by an independent lab, and we publish the full report.
Our two oils, measured
Both tested. Both published.
Total polyphenols in mg/kg, from the same lab report. Some researchers draw the line for "high phenolic" at 500 mg/kg (Jiménez-Sánchez et al., 2022). Both of ours clear it.
Why it's rarely on a label
The number most bottles leave out.
Polyphenols vary from harvest to harvest and fade with time, so the honest way to report them is per batch, from a lab, with a date. That is how we do it. The figure is not printed on our bottle either. It lives in the lab report, which we publish for every new bottling.
One note on comparing: labs use different methods, and their numbers don't always line up. Ours uses HPLC, the International Olive Council's method. Before you trust any number, ours included, ask which lab, which method, which date.
Chem Solutions, Athens · Certificate 24742 · January 2026 · 0.20% acidity
Where it comes from
Trees older than a century.
The olives grow on trees over 100 years old on the Messara plain in Crete. 100% Koroneiki. Grown, harvested and pressed by Sifis Sklavakis, the fourth generation of his family to farm olives there.
Every code on the label can be looked up: the farm, the bottling facility, the PDO certificate, the organic control body.
4.95 out of 5 stars, from 57 reviews of our EVOO Centenarian.
Thank you for choosing substance over spectacle.
643 mg/kg. Measured, not promised. EVOO Centenarian, 6.7 fl oz, $20. Or both oils together as the Duo.
The harvest letter
Learn to read a label. Hear when the next harvest lands.
- How to spot old oil on the shelf, in two minutes
- The lab analysis for every new bottling, when it's published
A free Spout with your first olive oil order. The code arrives by email.