Two winemakers, Robert Mondavi Winery and Chandon, have signed on as partners, the company announced Thursday night.

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LVMH-owned Domaine Chandon in California makes close to 7, 000 cases of pinot meunier, but more common is the winery that produces only a few hundred.

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"You might think, 'Oh wait, I'm not supposed to eat two of them, '" because you have to open a new package or wrapper, Mr. Chandon says.

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