causing the valve 9 to open and consequently allowing the water evacuation when vessel 5 is at its lower position as shown in fig2 the evacuation pipe 8 has a flexible upper length to fit to the raising of vessel 5 and a lower stiff length located downstream of valve 9 the stiff length leads off to a drain pipe 14 located at the bottom of a basin 15 adapted to collect fluids accidentally spilled during the operating steps inside vessel 5 an overflow probe 16 is provided which through the above mentioned electronic system controls the opening or closing of a valve 17 inserted in the hot water feeding line 7 18 denotes a basket consisting of two substantially semicylindrical half shells 19 and 20 fig2 having lower semi frustoconical ends which are mutually articulated and capable of rotating about a horizontal rod like support 21 fixed to frame 4 opening and closing of half shells 19 and 20 takes place through a known system not shown for the sake of simplicity governed by the above mentioned electronic control system basket 18 is disposed in register with the higher position of vessel 5 and its sizes are slightly smaller than those of said vessel so that it can be introduced thereinto when vessel 5 is at its higher position basket 18 is adapted to receive a single previously metered pasta helping to be cooked which is held in a suitable container 22 coming from a store for example a refrigeration room not shown by means of a feed member consisting for example of a chute 23 preferably container 22.