A double handle knife is described with secondary handle rotatable upon a pivot post. In further embodiments: the secondary handle is mounted to top front of the blade: at a fixed angle; by splined means; or by indexable means. Attachments convert single handle knife into double handle knife functioning identical to those described above. Methods are described utilizing the double handle knife invention in any of its embodiments being gripped by the dominant hand on the primary handle, four fingers of the non-dominant hand being placed evenly upon the secondary handle with long axis thereof positioned at an angle of 45 degrees (+ or -25) degrees to the long axis of the knife blade, the palm/or thumb of the same hand positioning the food item, both hands applying downward pressure and the food item being easily and accurately cut.