Here’s a quick guide on how to do Gongfu cha with Chinese black tea like Lapsang Souchong, one of the more easily found Chinese black tea in the market. Such tea as well as oolongs and Puehr can handle boiled water but 95 degrees centigrade is preferred. Let the water boil and let stand for a minute. Other types of tea require proper temperature and water vs. tea ratio. Green tea needs 80-85 degrees C, while white tea needs cooler water. Using hot water will shock the leaves and release tannins that make the tea bitter.
Other than that, the procedure for Gongfu cha is basically the same.