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Cast iron cookware has been used for centuries due to its durability and excellent heat retention properties. One of the key aspects of maintaining cast iron cookware is preserving its seasoning, which not only enhances the flavour of the food but also prevents rusting. In this article, we will explore some essential cleaning tips that will help you preserve the seasoning of your beloved cast iron cookware.

1. Understanding Cast Iron Seasoning

Before diving into the cleaning tips, it’s important to understand what cast iron seasoning is and why it’s crucial for the care of your cookware. Seasoning refers to the layer of polymerized oil that coats the surface of the cast iron, creating a non-stick finish. It protects the cookware from rusting and imparts a rich flavour to your dishes over time. Preserving the seasoning is vital to maintain the performance and longevity of your cast iron cookware.

2. Avoid Using Soap

Contrary to what many people believe, using soap is not essential when cleaning cast iron cookware. In reality, using soap can actually remove the seasoning that you have put significant effort into building. Therefore, it is recommended to choose a milder cleaning method that will not compromise the seasoning. This brings us to our next valuable tip.

3. Gentle Hand Washing

The best way to clean cast iron cookware is through gentle hand washing. Start by rinsing the cookware with hot water immediately after use, using a non-abrasive sponge or brush to remove any food particles. Avoid using steel wool or harsh scrubbers, as they can scratch the seasoning.

4. Utilize Salt Scrub

For stubborn food residue or stuck-on bits, a salt scrub can be highly effective. Sprinkle a generous amount of coarse salt onto the cookware, then use a damp cloth or sponge to scrub the surface. The salt acts as a natural abrasive that helps lift away the food without damaging the seasoning. Rinse thoroughly with hot water and dry the cookware completely.

5. Boiling Water Method

Another excellent method for cleaning cast iron cookware is the boiling water method. If you have stubborn residue that won’t come off with a salt scrub, fill the cookware with water and bring it to a gentle boil. Allow the water to simmer for a few minutes, which will help loosen any stuck-on food. Afterwards, carefully drain the water, and use a sponge or brush to gently clean the cookware. Rinse and dry thoroughly.

6. Towel Drying and Stovetop Re-seasoning

Proper drying is essential to prevent rusting. After washing your cast iron cookware, towel dry it immediately to remove any excess moisture. To ensure thorough drying, you can place the cookware on a stovetop burner on low heat for a few minutes. This will help evaporate any remaining moisture. Once dry, you can proceed to re-season the cookware lightly to maintain its protective coating.

7. Oil Your Cookware Regularly

Regularly oiling your cast iron cookware is crucial for its upkeep. After each use and cleaning, apply a thin layer of oil to the entire surface, including the handle. You can use oils with high smoke points such as vegetable oil, canola oil, or flaxseed oil. Rub the oil in with a cloth or paper towel, ensuring a thin, even coating. This process helps to replenish the seasoning and provides additional protection against rust.

8. Proper Storage

Storing your cast iron cookware correctly is essential for preserving its seasoning. Make sure the cookware is completely dry before storing it to prevent moisture buildup and rusting. Stack the cookware with paper towels or dishcloths between each piece to prevent scratching. If possible, store your cast iron cookware with the lids off to allow for air circulation.

9. Dealing with Rust

If you notice any signs of rust on your cast iron cookware, don’t panic. Rust can be easily removed with a little effort. Start by scrubbing the affected area with a steel wool pad or a stiff brush. Once the rust is removed, rinse the cookware thoroughly, dry it completely, and re-season it with a thin layer of oil. Regular maintenance and proper seasoning will help prevent rust from forming in the future.


Proper cleaning and care are essential for preserving the seasoning of your cast iron cookware. By following these cleaning tips, you can ensure that your cookware remains in excellent condition, providing you with years of reliable use. Remember to avoid soap, opt for gentle hand washing, utilize salt scrubs or boiling water methods for tougher cleaning, towel dry and stovetop re-season, regularly oil your cookware, store it properly, and address rust promptly. With these practices in place, you can enjoy the benefits of your well-maintained cast iron cookware for many delicious meals to come.

Looking for something else? Read more detailed kitchen cleaning guides.