Ziti with Sausage, Onions, and Fennel
Here the meaty skillet sauce and the ziti cook at a leisurely pace compared to the rapidity of the preceding capellini with caper sauce. But the cooking principles are the same. In the first few minutes you want to caramelize each ingredient as it is introduced to the pan—this is especially important with the tomato paste, to give it a good toasting before it is liquefied in the pasta water. The sauce needs 6 minutes or more at a good bubbling simmer after adding the water in order to draw out and meld the flavors of the meat and vegetables as well as to soften the pieces of fresh fennel. At that time the ziti will be ready to finish cooking in the sauce.