Christopher Kimball goes off the beaten path to learn new twists on Italian classics. He starts with Fresh Egg Pasta with Brown Butter and Hazelnuts. Then, Rosemary Gill shows that Roman-Style Chicken Cacciatore is not always a chunky, tomato-heavy braise. Rose Hattabaugh prepares Spinach and Ricotta Dumplings in Tomato Sauce, and we investigate how to tame the acidity of tomato sauce.