A system for producing edible residues, the system comprising one or more operating units for receiving and physically treating a feedstock, wherein at least one of the one or more operating units is a recalcitrance reducing operating unit for irradiating the feedstock to reduce recalcitrance； one or more cooking devices for processing the feedstock prior to fermentation； a bio-processing unit for fermentation； an evaporator/dryer operating unit； and an irradiating unit.
