Ceramic containers for cooking.
According to a query on Bilibili, Chaga is best cooked in ceramic containers. Chaga contains a variety of active ingredients and has anti-cancer, lowering blood pressure, and lowering blood sugar. When cooking Chaga, first cut Chaga into 1-2 cm pieces, boil water in a ceramic pot, and after the water boils, put Chaga into the pot and cook for 20-30 minutes. If you boil chaga and water together, filter out the chaga, let it cool and drink it, the effect will be better.