@j.kenji.lopezalt: Have you ever noticed how many candy bars are variations of the same basic ingredients? Add peanuts to a Milky Way and you've got yourself a Snickers. Take away the chocolate and boom: Payday. There's something eloquent to be said about how the four classic Roman pasta dishes work the same way; they all start with the same foundation and make small ingredient changes to produce entirely different results. ...But more importantly, you'll now have this jingle stuck in your head for the rest of the day.