Wine making has been an integral part of human civilization. Archaeological findings at Neolithic sites in Georgia assert the presence of wine as long back as in 6000 BC. Wines are used complementary to meals, during celebrations, in cooking, and during religious occasions too. Wines are classified on the basis of the method of manufacturing, quality of grapes used, taste, vintage, and wine style.
Methods involved in wine making may vary from country to country. Most wine manufacturers follow traditional methods of wine production and strictly adhere to them. Color of red wine is not a result of fermented grape juice, but due to color of grape-skin that is allowed to be present with the juice during fermentation. Only juice of grapes is used to make White wine and can thus be made from grapes of any color. Sparkling wine usually goes through a two-step fermentation process. It is first allowed to ferment in open and later in a sealed container. Carbon dioxide gets trapped in this sealed container, giving it a sparkle and a slight bubbliness.