The term “reserve” on bottles of wine throughout the world implies the wine is somehow different and usually better than regular bottlings. It can mean the wine has possibly been kept back at the winery and aged longer in either barrel or bottle before release. Perhaps it was made with grapes from older vines that produce less fruit, but of better quality. It might signify the grapes came from a very special vineyard that possesses unique terroir. The reason can be any one of the above, another or a combination of several and this info is usually mentioned on the label somewhere. Most reserve wines are small production and will age longer too. Ultimately, this wine is more expensive to produce and most likely will cost more to purchase.