"Trio" is crafted to mirror the classic Meritage wine where small lots of red wine varietals are blended to create wines with great structure and character. Katz Sonoma Trio Red Wine Vinegar, made in the traditional "Orleans Method", blends Merlot, Zinfandel and Cabernet Sauvignon. The finished vinegar has a lovely garnet color with nuances in the flavor of sweet ripe berries. Unlike most modern vinegar making, which is based on rapid, forced fermentation, the Orleans Method requires the vinegar to age for months in small oak barrels. As a consequence of this extensive process, very little commercial production of the vinegar exists in the US.