NOVELTY - Making a product, comprises: modifying a manufacturing facility i.e. built to produce ethanol exclusively from grain, or by adding a lignocellulosic saccharification unit and electron beam devices to the manufacturing facility; transporting a lignocellulosic starting material to the modified manufacturing facility; irradiating the lignocellulosic starting material to produce an irradiated lignocellulosic material; and saccharifying the irradiated material, fermenting the saccharified material substantially entirely to butyric acid, and converting butyric acid to the esters or anhydrides.    USE - The method is useful for producing product such fuel, preferably butanol (all claimed) and ethanol.    ADVANTAGE - The method is capable of producing the product in powdered, granulate or particulate form, which is conveniently transported and is easy to store and handle.    DETAILED DESCRIPTION - Making a product, comprises: modifying a manufacturing facility i.e. built to produce ethanol exclusively from grain, or from corn sweetener, sucrose, or lactose by adding a lignocellulosic saccharification unit and one or more electron beam devices to the manufacturing facility; transporting a lignocellulosic starting material to the modified manufacturing facility; irradiating the lignocellulosic starting material using the electron beam devices to provide a dose of at least 10 Mrad to produce an irradiated lignocellulosic material having a lower level of recalcitrance than the lignocellulosic starting material; and producing esters or anhydrides by a process comprising saccharifying the irradiated material, fermenting the saccharified material substantially entirely to butyric acid, and converting at least some of the butyric acid to the esters or anhydrides.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic diagram of a process for making ethanol from a biomass feedstock.    System (12) cooking devices (10)    Bioprocessing system (18)    Holding tank (20)    Stripping column. (22)