During our 4-hour trip to Bologna we ate lunch at Tamburini, located smack in the center of the city. A friend and the New York Times 36 Hours in... column both recommended this place so we figured it was worth a try. The verdict? Delicious.
There are lots of ways to get and eat your food at Tamburini: you can get pre-made main and sides dishes to go, grab a tray and sample what's available from the specials of the day, and/or also grab fresh pastas and meats ready to be cooked in that night's dinner. Like I said, lots of options! I loved that you could order half portions of the day's specialties because between four of us we really got to taste just about everything they had on offer.
My one word of caution is actually in regard to the large array of options. If you look at the Trip Advisor reviews you'll see tourists (mostly American) complaining about how they got handed menus, seated and "tricked" into higher priced food, particularly around dinner time. My suggestion would be to stick to the lunch hour and know that grabbing and tray and sampling the menu del giorno is probably the best option.
All in all, highly recommend this yummy spot in Bologna!