An asado is the name of the Argentine barbecue. An asado usually has a typical sequence of meats, served in courses. First are the chorizos, morcillas (black pudding or blood sausage), chinchulines, mollejas (sweetbread), and other organ meats. Then come the costillas or asado de tira (short ribs). And lastly, the vacío (flank steak).
An asado is quite an affair. If you're invited to one, it means you are loved, and should attend. The meat cooks very slowly over coals, for hours and hours before it's served. When going out to restaurants on the trip, I normally ordered fish, as it is easier on my digestive system. But at a family asado, in Buenos Aires, I went to town.
Other food that usually accompanies asados are: different salads (for example: lettuce, onions, and shredded carrots, or just tomatoes and onions with olive oil and lemon juice), bread, roasted and marinated bell peppers, chimichurri, beer, wine, and soda water, and for dessert, a fruit salad... I'll probably think of some more things later - and when I do, I'll update this list.