KITCHEN PRO DOUGHNUT MAKER DROPPER If you've never tried homemade doughnuts before, don't wait any longer! Once you've made the batter simply pour it into the holder, push the spring actuated plunger, then release into hot oil for uniform and professional results. Thickness of the doughnut can be varied by adjusting the valve on the bottom of the doughnut maker. Height, including plunger: 19cm.