text: The traditional recipe , registered in 1982 by the Bolognese delegation of Accademia Italiana della Cucina , confines the ingredients to beef , pancetta , onions , tomato paste , meat broth , white wine , and milk or cream .
simplified: In 1982 , the Bolognese delegation of Accademia Italiana della Cucina said that the recipe may only contain beef , pancetta , onions , carrots , celery , tomato paste , meat broth , red wine , and ( optionally ) milk or cream .