I only do this with unglazed clay Yixings, not porcelain (I just rinse those with hot water). I also do not boil Japanese kyusu before using them. Japanese safety standards are strict and reliable but the clay is also much less pourous, so I don't think boiling is necessary for typical Japanese tea ware.rhondabee wrote:Thanks for the info about the need to boil the pot & lid before use. I didn't know to do that - just rinsed it with hot water. I will do that & then see if that makes a difference. If I still get that chalky aftertaste, then the pot will be for decoration only.
A note on boiling:
Be careful you don't damage the pot, as rapidly boiling water can bounce it around quite a bit. I use a large pasta pot, put a large porcelain bowl inside, then place the Yixing in the bowl and fill with water. Make sure you fill the pot so it won't float. This method will keep the tea pot from bouncing off the metal walls of the cooking pot. I also do the lid separately so it won't collide with the tea pot. It's also important to make sure there is enough water so it won't boil dry. Thirty minutes to an hour is a long time and the water level will go down significantly. Don't fall asleep or you may lose the pan and tea pot!
If you don't have a bowl that fits inside the pan, you can wrap the Yixing in cloth to protect it. I've also put the Yixings in without the bowl and inserted a couple of pairs of disposable chopsticks through the handle and around the spout to keep the tea pot in place. This is trickier and may require keeping your eye on it, but it's worked when the Yixing was too big to fit in the inside porcelain bowl.
Unfortunately my first two Yixings were given to a co-worker for her display cabinet due to a clay taste that wouldn't go away. I hope you have better luck!