Dust half the ribs with about 1 tablespoon flour and then, when the oil is hot, slip the ribs into the pot and sear for 4 to 5 minutes on a side, until will browned.
Leave to rest for 10 minutes, then carve into thin slices and serve with the juices, garlic and onions from the pot spooned over the top, and with the fava bean salad on the side.