The Moka pot (or Espresso pot, or Moka Express), is a stovetop espresso maker, base on the principle of preparing coffee with pressurized boiling water. It was invented by Alfonso Bialetti in 1933 and while there are currently many manufacturers, his company Bialetti continues to market the leading model, known by the brand name Moka Express. They are made from aluminium with bakelite handles.