A vacuum meat marinating machine for products requiring a short vacuum massage cycle, comprising a substantially horizontal cylindrical vessel having a large opening at the top for rapid loading of product, said opening covered by a sealed vacuum cover during operation, and further having a hollow outer wall comprising a jacket for the circulation of liquid refrigerant. A paddle agitator is located within the vessel, having a hollow shaft running longitudinally within the vessel. Affixed at an angle to the shaft are a plurality of hollow triangular-shaped paddles, which paddles push product horizontally during operation. Liquid refrigerant circulates through the hollow wall of the vessel, as well as the hollow agitator shaft and paddles. The agitator shaft is connected to a reversible motor that periodically reverses the direction of rotation, thereby maximizing heat exchange between product and liquid refrigerant.