Trisaetum is a winery located in Oregon's Willamette Valley. Established in 2003 by Andrea and James Frey, the winery, pronounced "tris-say-tum", was named after the founders two children, Tristen and Tatum. The winery is still family owned and operated and produces small lots of critically acclaimed Pinot Noir and Riesling from its estate vineyards. Trisaetum's older vineyard, the Coast Range estate, is a 22-acre (89,000 m2) vineyard located in the southwestern corner of the Yamhill-Carlton District AVA. Trisaetum's winery is located on its newer 17-acre (69,000 m2) vineyard in the heart of the Ribbon Ridge AVA.