Leslie Sobracco discusses wine tasting on Wine Taste TV. She uses the four S technique, Seeing, Swirling, Smelling, and Sipping. Seeing is simply reviewing the color of the wine. Aged red wines should start to lose color around the rim after it has set in the glass for some time. This is due to the aging process. White wines will retain their color throughout because they have been exposed to air throughout the winemaking process. Swirling is placing the glass on the table and running it in circles. Swirling is used to coat the glass with wine, so that it can be smelled more easily. Smelling is discussed as the most important part of wine tasting. Leslie recommends smelling before and after swirling. Sipping is the final point. Sipping assesses the balance of the wine and makes sure you like it.