In the absence of tagliatelle, it can also be used with other broad, flat pasta shapes, such as pappardelle or fettuccine, or with short tube shapes, such as rigatoni or penne. Genuine ragù alla bolognese is a slowly cooked sauce, and its preparation involves several techniques, including sweating, sautéing and braising. Ingredients include a characteristic soffritto of onion, celery and carrot, different types of minced or finely chopped meat (generally bovine, including beef, and possibly pork, such as pancetta), wine and a small amount of tomato concentrate.