Chateau Ste. Michelle is in Woodinville, Washington. It is Washington state’s largest winery and its roots go back to the state’s first commercial winemaking ventures. In 1954 two Washington wineries merged to form American Wine Growers, which in 1967 began producing a premium line called Ste. Michelle Vintners. Today the estate has vineyards in the Columbia Valley in Eastern Washington and has commercial partnerships with Marchesi Piero Antinori of Tuscany and Ernest Loosen of Germany’s Mosel region. Though Chateau Ste. Michelle makes a large portfolio of wines, from Cabernet Sauvignon, Malbec and Syrah to Chardonnay, Viognier and many blends, it is perhaps best known for its Riesling.