We often steam eggs without tofu, is a great idea to add in some soft tofu. But we don't have your Taiwanese Rice cooker, so steam it in a wok, over medium low heat with a chopstick placed in between the wok n the lid, so the egg will be smooth. After that we love to sprinkle some green onion n pour in boiling hot fried garlic with the oil onto the green onion to let it release the aroma. Later add in some Soya sauce and pepper.