kyleshen wrote:This is what antique Yixing collectors do when they got a "new" teapot. Bleach overnight and lots of water later. In your case, maybe denture cleaner is good enough.
That is what they only do when they get a completely dirty pot that has been over the years exposed to dust and whatever else they don't exactly know.
Nobody does that to use a different tea in a pot that has been kept clean. The most i would do is to steep the pot in the new tea used for a bit, and then drink the new tea straight away. If one wants to be meticulous one may boil the pot, but that has a certain small risk of breakage.
At first there will be, as others have pointed out, a ghost of green tea, which soon will disappear.