Gamberi al Forno con gli Asparagi

During the early 1980s one of the best places to eat in Venice was (and still is at this writing) Fiore, a former osteria, a wine pub, taken over by a handsome, tireless young couple, Maurizio and Mara Martin. Mara does all the cooking, some firmly traditional, some of her own devising. One of her dishes I have admired is a creamy risotto with shrimp and asparagus; it led me, in turn, to derive from it a baked dish with all the same ingredients except for the rice. The rice I