The name cinque Pi refers to the 5 (Italian = cinque) most important ingredients in this sauce which in Italian all start with the letter p: panna (cream), purea di pomodoro (tomato puree), prezzemolo (parsley), parmigiano (parmesan), pepe (pepper). This pasta dish which originates from Italy is very popular in Switzerland. Therefore, I categorized it as Italian and Swiss. My BF who is Italian actually said that he has never seen it on the menu in Italia. Here in Switzerland you can find it in nearly ever Italian restaurant and many people cook it at home.