1-Cook the pasta in unsalted water
2-In a bowl, mix together the garlic (chopped), olive oil, well-chopped parsley, the colatura and finally one or two spoons of pasta water.
3-Drain the pasta whilst still quite firm and add the dressing you have just prepared
4-add the chili as you like, plus one as decoration
5-Stir together until well mixed, serve and enjoy