Bustreng (in Romagnolo dialect, bustrengo in Italian) is a traditional dessert from the area of Cesena, Forlì and Rimini, and also spread to some extent in the Marche region. Famous for being a poor dessert but at the same time rich in many ingredients, mostly prepared in the winter period: there is no real recipe but only an indicative basic preparation as the recipe varies from family to family and from town to town. The origin of this delicacy is unclear, just as uncertain is the origin of the name; it would seem to be traceable to the barbarians and the time when they invaded Emilia Romagna. The basic ingredients of bustreng never include white and yellow flour, milk, eggs, honey, and dried fruit (e.g., walnuts, almonds, pine nuts, or figs), while optional ingredients include breadcrumbs, butter, peeled apple, raisins, grated lemon or orange peel, and wine.

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