NOVELTY - A composition comprises: a polypeptide having cellulolytic enhancing activity and a liquor, where the combination of the polypeptide having cellulolytic enhancing activity and the liquor enhances hydrolysis of a cellulosic material by a cellulolytic enzyme.    USE - For degrading or converting cellulosic material; for producing fermentation product; for fermenting cellulosic material (claimed); for saccharifying cellulosic material to fermentable sugars and convert the fermentable sugars to many useful substances e.g. fuel, potable ethanol, or fermentation products e.g. acids, alcohols, ketones or gases.    ADVANTAGE - The combination of the polypeptide having cellulolytic enhancing activity and the liquor enhances hydrolysis of a cellulosic material by a cellulolytic enzyme.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) degrading or converting (M1) a cellulosic material involving: treating the cellulosic material with an enzyme composition in the presence of a polypeptide having cellulolytic enhancing activity and a liquor, where the combination of the polypeptide having cellulolytic enhancing activity and the liquor enhances hydrolysis of the cellulosic material by the enzyme composition;    (2) producing (M2) a fermentation product involving: saccharifying a cellulosic material with an enzyme composition in the presence of a polypeptide having cellulolytic enhancing activity and a liquor, where the combination of the polypeptide having cellulolytic enhancing activity and the liquor enhances hydrolysis of the cellulosic material by the enzyme composition; fermenting the saccharified cellulosic material with at least one fermenting microorganism to produce the fermentation product; and recovering the fermentation product from the fermentation;    (3) fermenting (M3) a cellulosic material involving: fermenting the cellulosic material with at least one fermenting microorganism, where the cellulosic material is saccharified with an enzyme composition in the presence of a polypeptide having cellulolytic enhancing activity and a liquor, where the combination of the polypeptide having cellulolytic enhancing activity and the liquor enhances hydrolysis of the cellulosic material by the enzyme composition; and    (4) an isolated liquor, which in combination with a polypeptide having cellulolytic enhancing activity enhances hydrolysis of a cellulosic material by a cellulolytic enzyme.