Avoid the restaurants in the tourist area during the day, as they are overpriced and often only full of other tourists! Look for smaller cafes and bars. A quick breakfast usually consists of toast pan tostada and coffee cafe con leche--coffee with milk; be sure to add the pack of sugar always served with it for a real treat. If you are looking for an inexpensive snack or lunch, any bar will be able to make you a sandwich bocadillo with your choice of ham, cheese, or tomato. Also, look for bakeries pastelerias, as Spain has some of the finest pastries around.