Chasing Chasselas

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All of the grape varieties in France are chasing Chasselas—or ahead of Chasselas, or running side-by-side with Chasselas.

And you thought Chasselas was just an insignificant little grape that only Switzerland cares about. Think again.

Late last night while I was studying the Bordeaux Wine Guide published by the CIVB (Counseil Interprofessional du Vin de Bordeaux) I saw it right there on page 43: “In France the main families of grapes are defined (by typical time of ripening) according to the usual maturity date of Chasselas (the reference variety).”

I had to read it twice and call four of my wine friends to see if they had ever heard of Chasselas being France’s reference variety. No one had. As such, I did a bit of research.

The quick version is: it’s true.

Back in the 1800s, a French ampelographer named Victor Pulliat (1827-1896) created a classification of grape varieties—The Pulliat Classification—based on their typical ripening date in relation to the Chasselas Doré grape variety

The Pulliat Classification breaks down as follows:

  • Early-ripening grape varieties:  Ripen from eight to ten days ahead of Chasselas Doré
  • First-period grape varieties: Ripen at about the same time as Chasselas Doré
  • Second-period grape varieties: Ripen from 12 to 15 days after Chasselas Doré
  • Third-period grape varieties: Ripen from 16 to 30 days after Chasselas Doré
  • Late-ripening grapes: Typically ripen more than 31 days after Chasselas Doré

Chasselas grapes on day zero (?)

The Pulliat Classification seems like an interesting bit of history in the world of wine, but as I just learned, it is still used. These days, however, the Winkler Scale created by Maynard Amerine and A. J. Winkler of UC Davis—which measures ripening in terms of degree-days or heat summation—is in wider use. The Winkler Scale was designed in 1944 to be used in California but has since been used in many wine growing regions all over the world.

References/for further information:

The Bubbly Professor is “Miss Jane” Nickles of Austin, Texas… missjane@prodigy.net

About bubblyprof
Wine Writer and Educator...a 20-year journey from Bristol Hotels to Le Cordon Bleu Schools and the Society of Wine Educators

2 Responses to Chasing Chasselas

  1. That’s a very interesting and informative article, thanks very much!

  2. jheuristic says:

    Thanks. Lived in a Chasselas vineyard in Geneva/Genève. Knew it was nobler than the wine media claims. Thanks.

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