When we don't used the cast kettle for a while. The rust grow inside and outside of the kettle. What should we do? I boiled a pot of dark oolong for 1/2 hours. And then used tea towel (soaked with tea) patting the kettle's surface gently. The tannic acid from tea really reacts the rust magically. What is your experience? #castironteapot #castiron #castironkettle #japanesecastle #japanesekettles #teaceremony #teazen #teameeting #teakettle #ironpot #gongfucha #kongfutea #teaculture #teatime (at The Chinese Tea Shop) https://www.instagram.com/p/CVkGrDRF5US/?utm_medium=tumblr












