San Luis Obsipo wine country (or SLO wine, if you will) is located in south central California, about midway between San Francisco and California. There are two AVAs: Eden Valley, a very cool district, no more than five miles from the Pacific, and Arroyo Grande, a slightly warmer zone. The entire region runs from west to east - somewhat unusually - and is influenced by late afternoon winds from the ocean. About two dozen varieties are planted her, with the most important being Pinot Noir, Chardonnay, Cabernet Sauvignon, Merlot and Riesling. Pinot Noirs tend to be quite rich with an herbal streak, while the Cabernet Sauvignons have an earthiness and restraint. (Wine/Appellations)