Oak Knoll Winery

  Oak Knoll Winery is a privately held winery located in the Tualatin Valley near Hillsboro, Oregon, United States. Established in 1970, it is the largest winery in Washington County and produces Pinot noir, Pinot gris, and Chardonnay. Oak Knoll does not have its own vineyards, instead of purchasing grapes from area Willamette Valley grape producers. The winery was established in 1970 by Marjorie and Ron Vuylsteke south of Hillsboro on what was then a dairy farm. It was the first winery in Washington County. In its early years, the winery used repurposed Coca-Cola drums for storing the wine during the fermentation process. The first batch consisted of 4,000 gallons of blackberry fruit wine. The winery's first Pinot noir was produced in 1973. Chardonnay and Riesling were introduced in 1975 and Pinot gris was first produced in 1990. Oak Knoll was the first winery in Washington County to open a tasting room. By 1986, the winery was the second-largest by volume sold in Oregon, but slip...