Polpette in Swiss Chard-Tomato Sauce

This recipe was originally published in my book Rustic Italian; in fact, it was the cover recipe in the first edition. Tender meatballs are simmered in a sauce of tomatoes and braised chard. Golden raisins, plumped up in the sauce, add a surprising, welcome agro-dolce punch that is borrowed from Sicilian tradition. Serve this as is, with bread to mop up…