This Swiss-made Kuhn Rikon Duromatic Pressure Cooker cooks healthy, delicious meals in minutes, with an ultra-fast cooking method that intensifies flavors and preserves vitamins and nutrients. Uses 60% less energy versus regular cookware. Kuhn Rikon has been a leader in pressure cookers for more than 50 years. The spring-loaded pressure cooker valve, which is substantially safer and more precise than the jiggle top mechanism that dominated pressure cookers of the past, was invented in 1949 by Jacques Kuhn, son of Heinrich Kuhn, the companys founder. Kuhn Rikon has the broadest line of pressure cookers on the world market today.