A frozen food dispensing machine comprising: (i) a product storage portion including a first volume of a product; (ii) a freezing portion operably connected to the product storage portion; (iii) a dispensing portion operably connected to the freezing portion, the dispensing portion configured to dispense a frozen food product; (iv) a recirculation line operably connectable to one or more of the freezing portion or the dispensing portion; (v) a product delivery line operably connected to the freezing portion, the product delivery line selectably connectable to: (a) the product storage portion for dispensing operations of the frozen food dispensing machine; or (b) the recirculation line for a periodic heat treatment cycle; and wherein the product delivery line comprises a probe adapted for connecting and disconnecting to the product storage portion, wherein the probe contains a one-way valve adapted to prevent product flow from the product delivery line into the product storage portion and wherein the recirculation line comprises a recirculation port adapted for connecting and disconnecting to the probe of the product delivery line; and (vi) a heat treatment circuit for the periodic heat treatment cycle of a second volume of the product disposed at the heat treatment circuit, the heat treatment circuit including the freezing portion and the dispensing portion and omitting the product storage portion, the heat treatment circuit configured to circulate the second volume of the product via a pump through the product delivery line, the freezing portion, and the recirculation line. (i) a product storage portion including a first volume of a product; (ii) a freezing portion operably connected to the product storage portion; (iii) a dispensing portion operably connected to the freezing portion, the dispensing portion configured to dispense a frozen food product; (iv) a recirculation line operably connectable to one or more of the freezing portion or the dispensing portion; (v) a product delivery line operably connected to the freezing portion, the product delivery line selectably connectable to: (a) the product storage portion for dispensing operations of the frozen food dispensing machine; or (b) the recirculation line for a periodic heat treatment cycle; and wherein the product delivery line comprises a probe adapted for connecting and disconnecting to the product storage portion, wherein the probe contains a one-way valve adapted to prevent product flow from the product delivery line into the product storage portion and wherein the recirculation line comprises a recirculation port adapted for connecting and disconnecting to the probe of the product delivery line; and (a) the product storage portion for dispensing operations of the frozen food dispensing machine; or (b) the recirculation line for a periodic heat treatment cycle; and wherein the product delivery line comprises a probe adapted for connecting and disconnecting to the product storage portion, wherein the probe contains a one-way valve adapted to prevent product flow from the product delivery line into the product storage portion and wherein the recirculation line comprises a recirculation port adapted for connecting and disconnecting to the probe of the product delivery line; and and wherein the product delivery line comprises a probe adapted for connecting and disconnecting to the product storage portion, wherein the probe contains a one-way valve adapted to prevent product flow from the product delivery line into the product storage portion and wherein the recirculation line comprises a recirculation port adapted for connecting and disconnecting to the probe of the product delivery line; and (vi) a heat treatment circuit for the periodic heat treatment cycle of a second volume of the product disposed at the heat treatment circuit, the heat treatment circuit including the freezing portion and the dispensing portion and omitting the product storage portion, the heat treatment circuit configured to circulate the second volume of the product via a pump through the product delivery line, the freezing portion, and the recirculation line.