Abstract: An apparatus and process for marinating foodstuffs in a short period of time are disclosed. The apparatus includes a base assembly defining a support surface, a removable cover disposed over the support surface and defining therewith an air-tight vessel for holding the foodstuffs and the marinade, and a vacuum pump assembly for withdrawing air from the vessel through a vacuum port communicating therewith. Upon withdrawing the air from the vessel and reducing the pressure therein, the foodstuffs expand and air is drawn out of the foodstuffs, creating voids therein, and, upon opening a pressure relief valve and returning the pressure therein to atmospheric, the marinade is drawn into the voids in the foodstuffs, thereby tenderizing and imparting flavor to the foodstuffs.