Sémillon is an historic Bordeaux variety, although plantings have fallen over the last 50 years. But it remains important, producing a range of styles: full-bodied and oak-aged, light-bodied and acidic, dry and sweet, and blends with Sauvignon Blanc. This episode explores the grape and the regions it's grown in: Bordeaux, Hunter Valley, Margaret River, California, Washington, and different parts of South Africa.