When cooking Thai Khanom Krok, you need to keep an eye on the dish, overheating can ruin the true flavor of the delicacy. The pan used to make your Khanom Krok should be heated (medium heat) even before the first layer of batter is poured into the pan. The entire cooking process can take 7 to 10 minutes on medium heat. The exact time will come through experience but, you can periodically lift the lid covering the Khanom Krok after about 5 minutes and peep into the pan. The edges of each depression will turn to a golden brown color when the khanom Krok is cooked. If the dish is not cooked yet, put back the lid and once again open it - every 30 seconds. The entire cooking process for Thai Khanom Krok is explained in the recipe at http://www.food-recipe-cooking.com/popular-thai-food-dishes-recipes-03.htm