Use a glass pot or stainless steel pot, add 500-600 ml of water, turn off the heat after the water is boiled, put it in a vegetable bag and cook for 25-30 minutes, then you can drink it.

2. Stewed foam type

Use a stainless steel thermos cup, add 350 ml of boiling water (above 95 degrees), put it in a stew-style vegetable bag, cover the thermos cup tightly, and stew for 30 minutes before drinking.