Compositions comprising a GH61 polypeptide having cellulolytic enhancing activity and a liquor and method of using thereof

A method for producing a fermentation product, comprising:

• (a) saccharifying a pretreated cellulosic material with an enzyme composition in the presence of a GH61 polypeptide having cellulolytic enhancing activity and a liquor, wherein the combination of the GH61 polypeptide having cellulolytic enhancing activity and the liquor enhances hydrolysis of the pretreated cellulosic material by the enzyme composition compared to the GH61 polypeptide alone or the liquor alone, wherein (i) the liquor is obtained from a material that is the same as the cellulosic material and the treatment conditions used to produce the liquor are different from the conditions used to produce the pretreated cellulosic material, or (ii) the liquor is obtained from a material that is different than the cellulosic material and the treatment conditions used to produce the liquor are the same as or different from the conditions used to produce the pretreated cellulosic material;
• (b) fermenting the saccharified cellulosic material with one or more fermenting microorganisms to produce the fermentation product;
• and
• (c) recovering the fermentation product from the fermentation.