I promised you I had one more Roman peasant dish to tell you about, and here it is. Sweet and sour onions, or, in the mother tongue, cipolline in agrodolce. Agrodolce, according to wikipedia, is just a sweet and sour sauce-- the sweet "dolce" component usually being sugar and the sour "agro" element being some sort of vinegar. If you'll recall, we first made an agrodolce sauce for pork chops, using honey and balsamic. Here, it was balsamic and sugar.
Even with the fancy sounding name, an agrodolce sauce is actually really easy to make, and the most difficult part of cooking this recipe is peeling all the little cipollinis. It's not hard per say, just time consuming and a definite pain in the ass. Before you start peeling away, throw your raisins in some hot water so that they'll rehydrate and get nice and plump.