When rice is almost ready, toast sesame seeds in a dry, heavy skillet over medium heat until they brown and smell fragrant. Set them aside in a small bowl. In the same skillet saute vegetables in 1 tablespoon oil, beginning with those that take longest to cook. You can also stir-fry them with a small amount of liquid, covered. Do not overcook; vegetables are ready when heated through. Serve vegetables over rice, sprinkled with seasme seeds and topped with liquid aminos to taste.