remember to cut the vegetables using a knife and not a chopper. In this manner they will not loose the harmonic combination of consistence and flavors, that make this recipe unique
let then simmer on the cooker for hours...
in the meantime prepare the strozzapreti, and let them rest
add strozzapreti to a great pot with abundant boiling salted water
remember to stir well until it boils again (as soon as you put the pasta inside the boiling will stop for a short time)
drain the strozzapreti and put it again in the empty pot, with abundant ragout, adding a little butter (if you like), cheese and stir well
serve immediately seasone with other parmesan cheese