TECHNOLOGY FOCUS - BIOLOGY - Preferred Composition: The enzyme composition further comprises accessory enzymes. Preferred Components: The CBH enzyme has at least 95%, preferably at least 97% sequence identity to SEQ ID NO: 2, the EG enzyme has at least 95%, preferably at least 97% sequence identity to SEQ ID NO: 4 or SEQ ID NO: 6, and the BG enzyme has at least 95%, preferably at least 97% sequence identity to SEQ ID NO: 8 or SEQ ID NO: 10. The CBH enzyme has at least 97% sequence identity to SEQ ID NO: 2 and optionally has at least 1, preferably at least 6 further amino acid substitutions when aligned optimally with SEQ ID NO: 2. The EG enzyme has at least 97% sequence identity to SEQ ID NO: 4 or SEQ ID NO: 6 and optionally at least 1, preferably at least 10 further amino acid substitutions when aligned optimally with SEQ ID NO: 4 or SEQ ID NO: 6. The BG enzyme has at least 97% sequence identity to SEQ ID NO: 8 or SEQ ID NO: 10 and optionally at least 1, preferably at least 5 further amino acid substitutions when aligned optimally with SEQ ID NO: 8 or SEQ ID NO: 10. The CBH enzyme component is present at 30 wt.% to less than 98 wt.%, the EG enzyme component is present at 1 wt.% to less than 45 wt.%, and the BG enzyme component is present at 0.1 wt.% to less than 45 wt.%. The enzyme components are each produced from a different host cell. The accessory enzymes include additional cellulases, hemicellulases and/or esterases.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The slurry comprises a cellulose substrate obtained from agricultural residue or grasses, where the agricultural residue is from corn stover, corn fiber, wheat straw, oat straw, barley straw, rice straw, Miscanthus, switchgrass, sugar cane, bagasse, soybean stover, and/or sugar beet pulp. Preferred Method: The method further comprises: pretreating the substrate; and fermenting the fermentable sugars with a fermenting microorganism under conditions sufficient to obtain an end-product, where the fermenting microorganism is yeast. In the method, at least 70% of the cellulose substrate is converted to glucose. In the method, at least 80% of the total available fermentable sugars in the cellulose substrate are converted to glucose. The method is conducted at 45-75 degrees C and a pH of 4-6.5. EXAMPLE - No suitable example given.