Beef with lamb

2 tablespoons safflower oil 2 tablespoons butter, unsalted 2 pounds stewing beef or lamb or pork, cut into 1-in cubes 3/4 teaspoon salt 1 x black pepper[...]

2 teaspoons cumin seeds (reserve 1/2 for sauce) 1/2 teaspoon Mexican oregano 5 garlic cloves , peeled 1/4 medium white onion, peeled 1/8 cup cooked white rice[...]