A Terroir-Tailored To your wine's story

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harnessing nature

Petra barrels are toasted with stones, such as lava and jade, using our patented non-combustion method. This singular process combines natural elements - water and stone - with the heat emitted from electrical heating elements to produce a constant, even toast.

Reflecting your essence

Petra can incorporate stones from your own terroir, allowing the barrel to reflect the very essence of your vineyard. The result is an imprint that endures through élevage, shaping wines that speak with clarity, authenticity, and distinction.

stone eligibility assessment

The Petra process requires stones to hold specific characteristics. If you are interested in providing stones, a preliminary study will be conducted ensure their eligibility.

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Winemaker Notes

from the cellar

  • Ted Henry

    Ted Henry

    Director of Winemaking, Groth Vineyards & Winery
    In the last couple of years, I have been really impressed with the flavor profile and texture of the Maison Moussié barrels. After testing the Lava and Jade barrels I am excited to try out toasting with stones from our vineyard this year.
  • Rafael Bianchi

    Rafael Bianchi

    Winemaker, Kyole Wines
    We aim to express the origin of our wines, deeply influenced by the rocks. Maison Moussié barrels are proving to be a great partner in achieving that harmony and balance.
  • Rafael Lucendo

    Rafael Lucendo

    Quinta de Aves
    Our Petra barrels toasted with stones from our vineyard were a bold step. The results: softer, elegant tannins, more volume, greater harmony, and a wine that fully respects the varietal and terroir.