Arrabbiata sauce, or sugo all'arrabbiata in Italian, is a spicy sauce for pasta made from garlic, tomatoes, and red chili peppers cooked in olive oil. "Arrabbiata" literally means "angry" in Italian; the name of the sauce may well be due to the heat of the chili pepper and one's reaction to it.
Arrabbiata sauce is usually served with penne pasta - the term means 'quills' in English - and may have chopped fresh parsley sprinkled on top. Many recipes call for Parmigiano-Reggiano to be incorporated with the dish, but it is not necessary. There are many variations to the original recipe and a few include onions to be fried with the garlic and tomatoes.