In a wide dish, brush vegetable oil all around the dish (this prevents the rice from sticking). Add in the drained rice, and mix it with the salt and vegetable oil. Pour in 200ml of water. Place in a steamer and steam for 30 minutes over high heat. Alternatively, you can also use a rice cooker. (Note: when the rice is done, cover the rice with heat proof plastic wrap when cooling to prevent it from drying out!)