As the weather cools I find myself craving a dish that includes a fat warm chunk of bone marrow. I don't care what comes with it, since any possible combination will be sure to please! I know several people have had it as part of a tasting menu at Opus and Providence, but it sadly failed to make an appearance when I ate there recently. I suppose I could cave and order Osso Buco at any number of establishments, but I would prefer a more creative offering. Any ideas?