1. For light rust stains, use vinegar to clean. First, boil white vinegar to remove the rust, then rinse thoroughly with clean water and dry over heat.
2. Scrub rust off the iron pot using a nylon scrubber (similar to a metal scrubber but gentler on iron) or a loofah sponge.
3. Bring rice washing water to a boil. While hot, repeatedly wipe the pan with a dishcloth—this doesn't take long. After turning off the heat, let it cool to warm, then rinse thoroughly with clean water and dry.
4. Finally, coat the entire pan with cooking oil. For best results, use cooking oil during the process (e.g., frying fish or pancakes), as this helps the oil adhere firmly to the pan. Knives soaked in rice washing water also won't rust—give it a try.
Methods to Prevent Rust on Cast Iron Pans
1. When stir-frying over high heat, food residue often sticks to the bottom. Always remove this residue to keep the pan clean and smooth. Preventing residue buildup significantly reduces rusting.
2. After each use, thoroughly clean the pan. Turn on the stove and heat the pan until all moisture evaporates, keeping it dry to prevent rust.
4. After cooking with the iron pot, clean it thoroughly and hang it in a well-ventilated area like a window or doorway. Air circulation will help prevent rust.
5. After using the iron pot, remove all moisture to keep it dry. Then place the pot in a plastic bag and seal it tightly. This prevents the pot from coming into contact with external moisture and air, thus avoiding rust.
6. Place fatty pork in a hot pan without oil. Allow the pork fat to render gradually. Continue heating until the rendered fat coats the entire interior surface of the pan. Once the pork appears dry, turn off the heat and let it cool completely overnight. This treatment significantly reduces future rusting.