Mayo Family Winery produces small lots of single-vineyard wines under the premise that the world's most interesting and highest quality wines must come from a single-vineyard source that can be expressed in the wines' aroma, taste and texture. Founded in 1993, the winery has two winemaking facilities in Glen Ellen, California, each fitted and equipped to produce particular types of wines. Mayo Family wines are only sold online or in their tasting room attached to the winery in the town of Glen Ellen and their two other tasting rooms in Sonoma Valley.