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🍷 Oenologist

Job ✔ Checked: 11.2026 · sources: 5 Updated: — Text expanded, FAQ and sources added

Also known as: oenologist, enologist, œnologue, oenologists

An oenologist (enologist, œnologue) is a trained wine scientist who oversees analysis, fermentation, ageing and quality from grape to bottle.

An oenologist (enologist, œnologue) is a trained wine scientist who looks after quality from grape to bottle. The International Organisation of Vine and Wine (OIV) defines the oenologist as an expert with several years of university-level training, able to cover the vineyard, winemaking, production control and analysis.

The title is protected by law no. 55-308. A decree, 82-681, backs it up. Only holders of the Diplôme National d'Œnologue (DNO) may use the title. The course lasts two years and carries 120 ECTS credits, with a compulsory internship in each year. Students arrive with a bachelor's degree in biology, chemistry or agronomy, and the diploma is awarded in Bordeaux, Dijon, Toulouse, Reims and Montpellier.

What the job looks like depends on the employer. On a grower's estate the oenologist advises on varieties and planting, follows fermentation, treatment and bottling, and runs analyses. At a wine merchant the work leans towards blending. During training, future oenologists learn to run physical, chemical and microbiological tests and to read the results, so a fault in the wine often shows up in the lab before it shows up in the glass.

People mix the oenologist up with the cellar master (maître de chai). The cellar master runs the cellar from the arrival of the grapes to bottling and works alongside the oenologist. With the oenologist's diploma he or she can take on the whole process.

So when an oenologist is named next to a wine, you know there is a recognised qualification behind it, and the OIV also expects traceability and food safety to be part of the job. For the drink itself see Wine, for the science see Oenology, and for neighbouring trades see Professions in the world of wine.

Facts

Main useWine quality from grape to bottle: analysis, fermentation, ageing, bottling 1
Legal basisIn France the title is protected by law no. 55-308 and decree 82-681 2
DurationDNO diploma: 2 years, 120 ECTS credits 3
Document identifierOIV definition: resolution OIV-ECO 492-2013 1
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How it connects to Wine

🍷 Oenologist → works with → 🍷 Wine

Frequently asked questions

Oenologist or enologist: which spelling is right?

Both name the same job. Oenologist is the British spelling and the one closest to the French œnologue; enologist is the American one.

Does an oenologist need a university degree?

The OIV recommends that the profession be defined by a multi-year university graduate-level course. In France the DNO is a two-year diploma with 120 ECTS credits.

Who sets the international definition of an oenologist?

The OIV. Its resolution OIV-ECO 492-2013 replaced an older 1976 definition and lists five fields of work, from grape production to analysis.

Oenologist or cellar master: who does what?

The cellar master (maître de chai) runs the cellar from grape intake to bottling and works with the oenologist. A cellar master with the DNO can take on the whole process.

Is it true that an oenologist only tastes wine?

No. Tasting is one skill among many. The job also covers analysis, quality control, traceability and food safety, and advice on the vineyard.

What to read next

  • 🧑‍🔬 Dairy technologist — A specialist who selects recipes and milk-processing settings at a dairy plant, including pasteurization at 72 °C.
  • 🔬 Laboratory — The place where milk is checked at reception, along with finished products; for raw milk the EU allows up to 400,000 somatic cells per ml.
  • 🍷 Winemaker — A winemaker is the specialist who takes wine from the arrival of grapes to bottling, watching fermentation and quality and building the blend.

Similar

🍷 Négociant · 🍷 Vigneron (grape grower) · 🍷 Sommelier · 🍷 Master of Wine · 🍷 Grape picker · 🍷 Vineyard tractor driver

Sources

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