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 was once said to be due to the heat of the chilli 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 cheese 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.