Spéciale de Claire: a meatier oyster, a stricter follow-up

How it differs from Fine de Claire, meat yield and finishing density, and tracking in OstraOS.

Updated on September 28, 20261 min readSpéciale de Clairetaux de chairaffinage

Spéciale de Claire is finished in a claire like Fine de Claire, but at a lower density. Fewer oysters per square metre means more food for each one, and more meat. That higher meat yield is what separates the two appellations. Size is measured separately: Spéciales de Claire come in every grade.

Spéciale de Claire or Fine de Claire?

  • Fine de Claire: the base claire-finishing appellation.
  • Spéciale de Claire: lower density, higher meat index.
  • Both are spelled claire, with an e. "Spéciale de clair" is a common mistake.

Backing a Spéciale with measurements

During an inspection or with a demanding buyer, meat yield is what you will be asked for. OstraOS records it as a test in its own right: method, sample size, measured ratio. The measurement stays attached to the lot.

  • Affinage opened with Spéciale de Claire as target quality and the claire's actual density.
  • Automatic duration check when the affinage closes.
  • A traced quality change if a lot planned as Spéciale ends up sold as Fine.
  • A label showing the lot's exact quality.

Tip

A quality change may reset the affinage counter if the new quality requires a different duration. OstraOS flags it for you.

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