White wines are created from white and yellow grapes, or red grapes after the skins have been removed. Whether a white wine is considered dry or sweet depends on the harvest and production. Dry wines are more completely fermented while sweet wines interrupt the fermentation process before the sugars are converted into alcohol. Overall, white wines tend to be lighter, sweeter, and contain less alcoholic than red wines.
Red wines are produced by allowing the skins to mix with the juice for part of the fermentation process. The red color comes from pigments in the skin of the grape. The color of the wine can range from deep violet, typical of young wines, to brick red for mature wines and brown for older red wines. Red-wine production involves extraction of color and flavor components from the grape skin. Red wines tend to be dryer, stronger, and more complex than white wines.