Red wine is made with dark-skinned rather than light-skinned grapes. During red wine production, the winemaker allows pressed grape juice, called must, to macerate and ferment with the dark grape skins, which adds color, flavor and tannin to the wine. Different grape varieties produce aromas of fruits, flowers, herbs, spices and earthy characteristics. For example, Pinot Noir tends to have raspberry, cherry and forest floor notes, while Cabernet Sauvignon generally boasts notes of cassis, licorice and wet gravel.