BUSTRENGO Bustrengo ( Bustreng ) Dolce typical traditional villages in the hills of Cesena The Bustrengo Romagnolo dialect " Bustreng " Sweet tradition typical of villages in the hills of Cesena , celebrated in the festival of the second Sunday of May . It ' a homemade cake prepared by the families of the small town of Romagna . The ingredients are known only in part ( about 20 of 32 ) , and the recipe is kept strictly secret , leaving the housewives the possibility of preparing it in many ways , according to different combinations of the ingredients themselves . Are constant use of white and yellow flour and nuts ( almonds , figs , walnuts ), but we know that you also use honey , lemon , oranges , raisins , milk, eggs , butter and wine . The dialect name " Bustreng " think of barbarian origin .