NOVELTY - An apparatus for in-vessel composting of feedstock into nutrient-rich compost comprises device (120) for shredding input material, where device is configured for shredding feedstock into particle size not greater than one cubic inch, vessel (200) with input port on top of vessel and discharge port, where vessel comprises one chamber and is powered for composting feedstock, and vessel is tilted from input port to discharge port, device for passing feedstock from device for shredding into vessel, device for rotating vessel, device for introducing air into vessel, and process controller (310).    USE - As apparatus for the in-vessel composting of feedstock into nutrient-rich compost (claimed); and for accelerated digestion of food scraps.    ADVANTAGE - The apparatus provides an improved composting system; and demonstrates enhanced effectiveness and utility. The apparatus provides simple, reliable, efficient, and aerobic in-vessel composting system. The apparatus reduces the processing variables, and simplifies operation; produces a more consistent, higher quality, nutrient rich end product; and effectively recycles food scraps and associated organic waste materials such as wood shavings into an end product that is manageable, useful and inoffensive. The apparatus is tolerant of incompatible solid contaminants that may be present in particular applications or installations. The apparatus is self-contained to provide for a continuous input of feedstock, generating an output of nutrient-rich, organic compost material of less volume than the feedstock. The composting system is capable of operating efficiently and with minimal preventative maintenance so that it becomes more mainstream regarding solid waste management. The apparatus is designed to minimize potential malfunctions by reducing the number of moving parts. The aerobic in-vessel composting system also enables expedient repair or other remediation of the system.    DETAILED DESCRIPTION - An apparatus for the in-vessel composting of feedstock into nutrient-rich compost comprises a device (120) for shredding the input material, where the device is configured and powered for shredding the feedstock into a particle size not greater than one cubic inch, a vessel (200) having an input port on top of such vessel and a discharge port, where the vessel comprises one chamber, and the vessel is configured and powered for composting the shredded feedstock, and the vessel is tilted from the input port to the discharge port, a device for passing the feedstock from the device for shredding into the vessel, a device for rotating the vessel, a device for introducing air into the vessel, and a process controller (310) communicating with the device for shredding, the vessel, the device for rotating the vessel and the device for introducing air into the vessel; or a shredder for shredding the feedstock, a hopper (110) connected to the shredder to facilitate feeding of feedstock, the vessel, an auger (130) and a chute connecting shredder to input port of input end of vessel, a device for rotating the vessel comprising a base frame (10) and a motorized direct-drive system comprising a motor (18) and a gearbox attached to base frame and coupled to drum, a device for introducing air into vessel, and process controller communicating with device for shredding.    DESCRIPTION OF DRAWING(S) - The figure shows side elevation view illustrating the shredder, the loading hopper, the conveying auger, a digester vessel, and a finishing screener.    Electric motor (2)    Base frame (10)    Drive wheels (14)    Motor (18)    Drive shaft (20)    Hopper (110)    Shredder (120)    Auger (130)    Vessel (200)    Control panel/process controller (310)    Aerator (320)