Came across the "original" of Tupper and wanted to comfort even have to cook potato soft within a few minutes. With Amazon Read the recessions and decided to Sistema - a word: TOP ... You notice almost no difference to potatoes from the pan, highly recommended. The processing is also 1A, it all feels on quality, the 4 closures should last for years! We then refilled the same: the pasta cooker of Sistema also works flawlessly! Absolue buy recommendation!