The greatest and most long-lived wines in the world are Red wines. Some ‘Cru Classe’ wines are capable of ageing for over 100 years. Colour is extracted by crushing the grapes and fermenting on the skins. The amount of colour is determined by the length of maceration. The skins also produce tannins which wine makers have to control. At present, the fastest growing red grape in sales globally is Malbec, but sales of classic varieties such as Shiraz, Merlot and Cabernet Sauvignon remain strong. As with White wines, some red grapes love Oak. An example is the Red wines from Rioja in Spain which have strong oaky, vanillin, and toasty characteristics.