Thoran or poriyal in south india means stir fry vegetables cooked in a tempering of mustard seeds, curry leaves, onions and red chillies. Beans poriyal is easy to make and served along with rice and curry like sambhar or dal. You can bake the beans in a wok after tempering by adding little water and cook with the lid covered. Another quick option is to blanch the beans before adding the tempering . This quickens the cooking process and also gives a nice green color to the beans. The addition of ground spices is optional.