Lamb Stew with Indian Spices, Cream, and Yogurt

In its most basic form, lamb curry is lamb stew with curry powder cooked in a little butter added to the braising liquid. If you want to stay with this simple approach, cook 2 tablespoons curry powder in 2 tablespoons butter in a small pan over low to medium heat for about 1 minute, or until the curry is fragrant, and then whisk half of the mixture into the finished stew, taste, and add more of