A machine for food waste processing, comprising: a power supply; a control system coupled to the power supply; a mixing drum defining a mixing chamber and having a volumetric capacity of 2000 litres or less; a mixing shaft having mixing blades extending from the mixing shaft, the mixing shaft being configured to rotate to move the mixing blades within the mixing chamber; an ioniser coupled to the power supply and arranged to provide a source of air that is rich in reactive oxygen species; a heater and a fan coupled to the power supply and arranged to receive the source of air, the heater and fan cooperating to provide a source of heated gas rich in ionised oxygen to the mixing chamber, wherein the heated gas is between 50 and 70 degrees C and/or wherein the environment in the processing drum is heated to a temperature in the range of 50 to 70 degrees C; a motor arranged to draw power from the power supply and to drive rotation of the mixing shaft; wherein the mixing drum defines an input aperture to receive food waste and an outlet to disgorge processed waste residue; wherein the control system is configured to operate the motor to drive the mixing shaft for multiple hours while monitoring operating parameters of the machine in order to produce a processed waste residue, optionally wherein the residue comprises or consists essentially of substantially dried and/or inert particulate; wherein the outlet is disposed in an outer wall of the drum at a position that is vertically above a position of the mixing shaft, and wherein the mixing shaft has at least one scoop coupled thereto, the at least one scoop being configured to carry processed waste residue to the position of the outlet. a power supply; a control system coupled to the power supply; a mixing drum defining a mixing chamber and having a volumetric capacity of 2000 litres or less; a mixing shaft having mixing blades extending from the mixing shaft, the mixing shaft being configured to rotate to move the mixing blades within the mixing chamber; an ioniser coupled to the power supply and arranged to provide a source of air that is rich in reactive oxygen species; a heater and a fan coupled to the power supply and arranged to receive the source of air, the heater and fan cooperating to provide a source of heated gas rich in ionised oxygen to the mixing chamber, wherein the heated gas is between 50 and 70 degrees C and/or wherein the environment in the processing drum is heated to a temperature in the range of 50 to 70 degrees C; a motor arranged to draw power from the power supply and to drive rotation of the mixing shaft; wherein the mixing drum defines an input aperture to receive food waste and an outlet to disgorge processed waste residue; wherein the control system is configured to operate the motor to drive the mixing shaft for multiple hours while monitoring operating parameters of the machine in order to produce a processed waste residue, optionally wherein the residue comprises or consists essentially of substantially dried and/or inert particulate; wherein the outlet is disposed in an outer wall of the drum at a position that is vertically above a position of the mixing shaft, and wherein the mixing shaft has at least one scoop coupled thereto, the at least one scoop being configured to carry processed waste residue to the position of the outlet.