Many red Rhône wines are aged from 6 months to 30 months in various sizes of oak barrels. At some properties, a percentage of the oak barrels may be new, and these barrels impart a toasty, vanillin flavor and smell to the wine. If the wine is not rich and concentrated, the barrels can overwhelm the wine, making it taste overly oaky. Where the wine is rich and concentrated and the winemaker has made a judicious use of barrels, however, the results are a wonderful marriage of fruit and oak.