Put it into the water to quickly make up the sauce, effectively color the pickles and polish the black beans.
 The method of using 鐡 is very simple and only requires 4 steps:
 1. Clean the iron ball with soap, water and towel.
 2. Put an iron ball in one liter of water or soup, and add 2 to 3 drops of lemon juice (or use curry, tomatoes and other acidic ingredients) to let the iron fish release iron. The iron ball can be taken out after the soup has boiled for 10 minutes.
 3. Add ingredients to the soup as you like, and you can enjoy a dish rich in iron nutrition.
 4. The used iron balls can be dried with a soft cloth and stored in a ventilated and dry place. After being completely dried, it can be stored in a sealed bag.
 Maintenance method of iron sea bream:
 • After use, please carefully remove the iron ball to avoid burns
 • After cleaning, wipe dry, wrap and store in a closed container (as long as the iron sea bream is less exposed to air, it is difficult to rust)
 • If it is rusted, use a wire brush to rub off the rust
 • If the iron ball turns black, immerse the iron ball in vinegar to return to the original iron color