Quetsche
Quetsche is the German word for a cooking utensil used to mashed or crushed potato; a potato press/crusher/masher. Quetsche is also known as Kartoffelpresse. Quetsche is available in several forms and sizes.
In Germany, where potato is a staple food, and where potatoes are sold in 5-kilo packs and more, Quetsche or Kartoffelpresse is always a common kitchen sight and may be no household does not have a Quetsche.
Kartoffel is the German word for "potato".