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Proprietary Blends

Often, wineries don’t list their grape varietals in the blend in order to keep their formula a secret from competitors. Creating a blend requires many hours in a laboratory and is a collaborative process among the winemaking team that takes many years to perfect.

Some well-known examples of proprietary blends from Napa Valley include Caymus’ Conundrum (includes both a red and white blend), Joseph Phelps’ Insignia (features Cabernet Sauvignon in the red-wine blend), and Dalla Valle Vineyards’ Maya (Cabernet Franc blend).

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Items in Proprietary Blends

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