In a large, wide saucepan, melt the butter in the oil over medium-high heat. Add the onions and sauté until translucent, about 4 minutes. Add a large pinch of salt, then add the rice and stir constantly for about 2 minutes. Add 1 cup of broth and simmer, stirring until the broth is almost absorbed. Add more broth, a cup at a time, allowing each addition to be absorbed before adding the next. Stir often. Cook until the rice is tender and the mixture is creamy, 20 to 25 minutes.
Stir in the lobster meat until heated through, then add the chives and 1⁄4 cup of the Parmesan. Season to taste with salt and pepper. Serve immediately with remaining Parmesan. Reserve excess. So you cooked some lobster and that was great. You sautéed the empty shells in oil and cooked them off in a lot of water with an onion, a couple bay leaves and a few peppercorns, and made stock. This is as it should be, always. Lobster is expensive. Make its flavors last. And when you are ready, make this risotto. Heat the stock in a pot. Melt butter in a heavy saucepan next to it, add onions and cook them translucent, salt the whole and add Arborio rice, then stir to combine. Now start adding hot broth to the rice, a cup at a time, stirring endlessly all the while, never adding more stock until everything you have added has been absorbed. When everything is tender and creamy, add Parmesan and any leftover lobster meat you happen to have. If the answer is none, do not worry in the least. This is a rich risotto without meat, luxury eating on the cheap. risotto for Eggs Over (Easy) Lobster Risotto Patties (recipe here).
