Cook the toor dal half way in a medium pot, in 2 cups of water, about 20 minutes. Drain and set aside. In a large skillet, heat the oil over medium-high heat. Add the mustard and 1 teaspoon cumin seeds and sauté 1 minute. Add curry leaves, sauté 1 minute. Add the steamed Brussels sprouts and mix well. Add turmeric and salt, cover and cook for 5 minutes. Using a mortar and pestle, pound the garlic with 1 teaspoon cumin seeds. Add to the skillet, along with the toor dal and red pepper powder. Mix well, sauté 5 minutes and serve, garnished with fresh minced cilantro. Bon appétit!