This extravagantly rich, dry-braised beef curry is a signature dish of the Minangkabau highlands of West Sumatra, Indonesia. It's a triumph of flavor, with lime leaves, nutmeg, and cloves. The dish is cooked by a process that inverts normal braising. The beef is slowly simmered in a spiced coconut-milk broth until the broth evaporates and the meat is left to sauté in the intensely flavored rendered coconut and beef oils left in the pot.