TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The method further comprises: allowing at least partial saccharification to occur prior to transporting; removing and/or denaturing the saccharifying agent; allowing saccharification to occur, resulting in a sugar solution or suspension, and removing xylose from the sugar solution or suspension; detoxifying the sugar solution or suspension; reducing the recalcitrance of the feedstock prior to mixing the feedstock with the fluid and saccharifying agent, where reducing the recalcitrance comprises irradiating the feedstock with ionizing radiation; mechanically treating the feedstock to reduce the bulk density of the feedstock and/or increase its surface area; producing energy or a fuel from the transported mixture; and transporting the mixture to a retrofitted or existing starch, sucrose or lactose ethanol plant. The method comprises allowing substantially complete saccharification to occur prior to transporting. In the method: transporting comprises transporting the mixture to a facility configured to convert grain, sucrose or lactose, utilizing a microorganism, to ethanol; transporting comprises shipping in a rail car tanker, tanker truck, pipeline or tanker vessel; mechanically treating comprises performing a shearing process on the feedstock; and reducing the recalcitrance comprises mechanically treating, chemically treating, sonicating, pyrolyzing, oxidizing or steam exploding the feedstock. Preferred Components: The total sugar content of the solution or suspension is at least 20 wt.%. The solution or suspension includes a surfactant. The saccharifying agent comprises an enzyme or an acid. The cellulosic or lignocellulosic material comprises a waste paper stream. Preferred Composition: The composition further comprises: a nitrogen source, which is urea or peptone, at a concentration of 5-750 (preferably 7.5-500 or 10-250) mM; a surfactant, at a concentration of 0.1-5 wt.%; a lipid, a mono-, di-, or triglyceride, or an unsaturated fatty acid; a sterol, which is ergosterol, at a concentration of 15-1000 parts per million (ppm) by weight; and an antibiotic, which is tetracycline, at a concentration of 15-1000 ppm by weight. EXAMPLE - No suitable example given.