The ingredients are typical of Southern Italian cuisine: tomatoes, olive oil, anchovies, olives, capers and garlic.
The sauce alone is called sugo alla puttanesca in Italian. Recipes may differ according to preferences; for instance the Neapolitan version is prepared without anchovies, unlike the version popular in Lazio, and chili peppers are sometimes added. In most cases, however, the sugo is a little salty (from the capers, olives, and anchovies) and quite fragrant (from the garlic). Traditionally, the sauce is served with spaghetti, although it also goes well with penne, bucatini, linguine and vermicelli.
Chopped garlic and anchovies (omitted in the Neapolitan version) are sautéed in olive oil. Chopped chili peppers, olives, capers, diced tomatoes and oregano are added along with salt and black pepper to taste. The cook then reduces this mixture by simmering and pours it over spaghetti cooked al dente. The final touch is a topping of parsley.