TECHNOLOGY FOCUS - BIOLOGY - Preferred Process: The fermentation is carried out at a pH of 3-7, preferably 4-5. The process is carried out for 1-96 hours, preferably 6-72 hours. The sugar concentration is kept at below 6 (preferably below 3) wt.% during simultaneous saccharification and fermentation. The starch-containing material is prepared by reducing the particle size of starch-containing material to a particle size of 0.1-0.5 mm. The reduction of particle size of the starch-containing material is done by milling, preferably dry milling. The temperature during simultaneous saccharification and fermentation is 25-40 degrees C, preferably 32 degrees C. In the process, an alpha-amylase is present at 0.001-10 (preferably 0.3-2) acid alpha-amylase activity/g DS or 0.001-1 (preferably 0.01-1) fungal alpha-amylase units (FAU-F)/g DS. The carbohydrate-source generating enzyme is glucoamylase, alpha-glucosidase, maltogenic amylase or beta-amylase, preferably glucoamylase and is present at 0.001-10 (preferably 0.1-0.5) glucoamylase activity/g DS. The alpha-amylase and glucoamylase is added in a ratio of 0.1-100 (preferably 10-40) glucoamylase activity/FAU-F when the saccharifying and fermenting steps are carried out simultaneously. The fermentation product is recovered after fermentation by distillation. The liquefaction of starch-containing material is carried out at pH 4-6.5, preferably at 4.5-6. The saccharifying and fermenting steps are carried out sequentially or simultaneously. The process further comprises reducing the particle size of starch-containing material and forming a slurry comprising the starch-containing material and water, prior to liquefying the starch-containing material. The slurry is heated to above the gelatinization temperature. The slurry is jet-cooked at 95-140 degrees C, preferably 105-125 degrees C, for 1-15 (preferably 5) minutes. In the process, the pullulanase is present during fermentation, and/or before, during and/or after liquefaction. Preferred Components: The metalloprotease is derived from a strain of the genus Thermoascus, preferably T. aurantiacus CGMCC No. 0670. The protease has the amino acid sequence comprising a fully defined 1-177 amino acid residues of SEQ ID NO: 1, sequences are not defined here may be found at ftp://ftp.wipo.int/pub/published pct sequences/publication or a metalloprotease being at least 80%, preferably at least 97% identical to it. The alpha-amylase is an acid alpha-amylase, preferably an acid fungal alpha-amylase derived from strain of Aspergillus, preferably a strain of A. niger, A. oryzae, A. awamori, or A. kawachii, or Rhizomucor, preferably a strain of R. pusillus, or Meripilus, preferably a strain of M. giganteus. The glucoamylase is derived from a strain of Aspergillus, preferably A. niger or A. awamori, a strain of Talaromyces, preferably T. emersonii, or a strain of Athelia, preferably A. rolfsii, a strain of Trametes, preferably T. cingulata, a strain of the genus Pachykytospora, preferably a strain of P. papyracea, or a strain of the genus Leucopaxillus, preferably L. giganteus and/or a strain of the genus Peniophora, preferably a strain of the species P. rufomarginata. The fermenting organism is yeast, preferably a strain of Saccharomyces cerevisae. The pullulanase is derived from a strain of the genus Pyrococcus, preferably a strain of P. woesei DSM No. 3773 disclosed in WO92/02614, where the mature protein is a homologous pullulanase having at least 80% identity to the amino acid sequence comprising a fully defined 1-1095 amino acid residues (SEQ ID NO: 6), sequences are not defined here may be found at ftp://ftp.wipo.int/pub/published pct sequences/publication. The starch-containing material is granular starch, which is derived from whole grain, corn, wheat, barley, rye, milo, sago, cassava, manioc, tapioca, sorghum, rice or potatoes. The dry solid content of the starch-containing material is present at 20-55 (preferably 30-35) wt.%. Preferred Composition: The composition further comprises a carbohydrate-source generating enzyme or an alpha-amylase. EXAMPLE - No suitable example given.