1.Fill the pot with enough water to fully submerge the ware, and add salt (about as salty as you can taste). Place the ware in the pot, bring it to a boil, and then turn off the heat.
If using an induction cooker, fold a clean, plain cloth and place it on the bottom of the pot to create a 2–3 cm gap between the pot bottom and the ware. Then place the ware on top of the cloth.

2.If placing multiple pieces in the pot at the same time, separate each piece with aluminum foil large enough to extend beyond the edges, and stack them carefully. (Be cautious, as stacking too many pieces increases the risk of breakage.)

3.If placing only one piece in the pot, you can gently wrap it entirely in aluminum foil or simply rub the surface once or twice with foil using chopsticks. Because this is a chemical reaction, a sulfur smell will be produced—make sure the area is well ventilated.