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2025/26 Early Harvest · PDO Sierra Mágina

Single Estate. Proven Origin.

Cold-extracted Picual from Jaén, milled within two hours of picking. 512 mg/kg polyphenols, verified by Tentamus. The certificate ships with every single bottle.

This bottling

Harvested
Oct 2025
Polyphenols
512 mg/kg
Free acidity
0.16%
Batch
KRJ-2526-01

Certified and independently tested by

Every other bottle in my cupboard has a best-by date and nothing else. Seeing the harvest month and the batch number on the label changed how I think about buying oil.

— Elena R., Munich

Grove to bottle

Five steps, none of them outsourced.

  1. 01 ·October

    Picked green

    Early harvest from the estate in Sierra Mágina, at 700–1,100 m.

  2. 02 ·Same day

    Milled in 2 hours

    The PDO allows 24. Every hour after picking costs polyphenols.

  3. 03 ·Below 27°C

    Cold extracted

    Mechanical only. No heat, no solvents, no refining.

  4. 04 ·Before bottling

    Tested

    Acidity, peroxide, UV and polyphenols by HPLC, at two labs.

  5. 05 ·November

    Bottled and numbered

    Dark glass, batch-stamped, certificate attached.

Measurable quality

Most brands describe their oil. The Chemist publishes it.

These are the figures from the current bottling, measured before the oil went into glass. Nothing here is an adjective.

Certificate of Analysis

Batch KRJ-2526-01 · Bottled 14 Nov 2025
Method: HPLC · ISO 660 · ISO 3960

Verified · Tentamus
Total polyphenols
512mg/kg — EU health claim threshold is 250
Free acidity
0.16% — extra virgin limit is 0.80
Peroxide value
8.2meq O₂/kg — limit is 20.0
Harvest
Oct 25Early harvest, green fruit
Cultivar
Picual100%, single varietal
Origin
JaénSierra Mágina, Andalucía
Olive to mill
<2 hPDO limit is 24 hours
Extraction
26°CCold, mechanical only
Tested byTentamusLaboratorio Tello

Tasting notes

Every note has a molecule behind it.

Olive oil is fruit juice with chemistry. When you feel the pepper at the back of your throat, that is a compound you can measure — and we do.

  • Oleocanthal

    The peppery catch at the back of the throat. The marker of a fresh, high-phenolic oil.

  • Oleuropein

    Bitterness. Green fruit, picked early. It fades as the oil ages.

  • cis-3-Hexenal

    Cut grass and green leaf on the nose, in the first seconds after pouring.

  • Oleic acid

    Body and smoothness. The monounsaturated fat that makes the oil stable in the pan.

  • α-Tocopherol

    Vitamin E. Protects the oil from oxidising, and you along with it.

5.0

Verified buyers

27 reviews

The pepper is real

I bought this after reading about oleocanthal and wanted to see whether a brand would actually publish the number. This one does. It catches the throat exactly the way a fresh oil should.

Marcus D. · Verified purchaseAustin, TX· 14 March 2026

Finally, a harvest date

Every other bottle in my cupboard has a best-by date and nothing else. Seeing the harvest month and the batch number on the label changed how I think about buying oil.

Elena R. · Verified purchaseMunich, DE· 2 April 2026

Worth it on bread, careful in the pan

Bitter and grassy, genuinely different from supermarket oil. I use it raw. Only note is that I burn through 500 ml faster than expected — I would order two next time.

Tom H. · Verified purchaseDublin, IE· 21 April 2026

My father is fussy about oil. He asked where I got it.

Sent a bottle to my parents in Athens, which felt like carrying coals to Newcastle. He rang me about the bitterness. That is the highest praise he gives anything.

Priya N. · Verified purchaseToronto, CA· 9 May 2026

The certificate is the whole point

I work in food QA, so I read the analysis before I read the marketing. Acidity and peroxide are both well inside spec and the polyphenol figure is genuinely high. Very few brands will show you this.

Jonas W. · Verified purchaseAmsterdam, NL· 28 May 2026

Slow to reach the US, but it arrived well

Took eight days rather than the five I expected, and I was nervous about heat in transit. Bottle arrived in good condition and tastes fresh. I would order in autumn next time, not July.

Claire M. · Verified purchaseAustin, TX· 17 June 2026

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How it is made

Crafted with precision

Traceability

Every bottle carries a batch number that maps back to a grove, a picking date, and a lab result you can read.

Harvesting

Picked green in October, at the point where polyphenols peak and yield does not. Milled within two hours.

Verification

Independent testing at Tentamus and Laboratorio Tello before a single bottle is filled. Results published, not summarised.

Sustainability

Integrated Production and Integrated Pest Management, registered under Olivares Vivos. Certificate PIAND/25-035.