marketed brands.  Cereals ,  potatoes ,  maize ,  tomatoes  and  onions  are the most important products, along with  fruit  and  grapes  for the production of  wine  (of which the best known are Emilia's  Lambrusco , Romagna's  Sangiovese , Bologna's  Pignoletto  and the white  Albana ).  Cattle  and  hog  breeding are also