 Àgbègbè wo ní Washington ni wọn mọ jù lọ fún ṣíṣe wáìnì? : Agbegbe Columbia Valley American Viticultural Area, ni Columbia Valley Plateau ti awọn agbegbe aringbungbun ati guusu ti ipinle, jẹ olokiki fun iṣelọpọ ọti-waini rẹ. 