Aside from the chicken, the essential ingredients of classic chicken cacciatore are onions, herbs, bell peppers, white (or red) wine, broth, capers, tomatoes, and sometimes mushrooms. Other original recipes include black olives, chopped carrots, diced celery, and tomato paste instead of tomato sauce. I have also seen recipes that call for chicken thighs and breasts, along with all other ingredients, for a larger meal.