The relationship between a wine and the climate, soil, and culture in which it was grown and produced-the "terroir"-is unseparable. For that reason, for instance, in France, wines labeled "Champagne" must be grown in the Northeastern province of Champagne. Similarly, wines labeled Port must come from Porto, Portugal and those labeled Sherry from Jerez, Spain.

Too often in the United States, these distinctions are ignored by wine producers that call any sparkling wine, Champagne and any fortified wine port. In the video below, the Center for Wine Origins discusses this problem: