How to cook
Clean the hearts well, make a cut on one side and season with spices as desired. Once you are done with each chicken heart, let them soak for an hour in the wine. Then drain them thoroughly in a colander and place them on skewers.
Between them, you can optionally put a piece of carrot or onion. Grease a grill pan well and roast the skewers with chicken hearts evenly on all sides. Meanwhile, heat a few tablespoons of oil and fry the crushed onions, grated carrots and finely chopped peppers.
Once softened, add the grated tomatoes and let the sauce boil until reduced. Finally, season with some spices, 1 tablespoon of vinegar and sugar. Serve 2 skewers of chicken hearts with the thus prepared sauce.