Question

Is there any way to remove rust from an old, well-seasoned cast-iron skillet that has been left in the dishwasher too long and rusted through at the bottom of one side (not sure how this happened)?

Answer 1

Yes, you can remove rust from a cast-iron skillet, even if it has been left in the dishwasher and rusted through. Here's a step-by-step guide to help you:

1. Assess the damage: Examine the rusted area to determine the extent of the damage. If the rust has eaten through the metal, creating a hole, it might be challenging to restore the skillet to its original condition. However, if the rust is mainly on the surface and hasn't caused significant damage, you can proceed with the following steps.

2. Safety first: Wear gloves to protect your hands and consider using safety goggles to shield your eyes from any debris that might come loose during the cleaning process.

3. Scrub with steel wool or a stiff brush: Start by scrubbing the rusted area with a steel wool pad or a stiff brush. Remove any loose rust, dirt, or debris. Apply gentle pressure and scrub in a circular motion. This step helps to remove the initial layer of rust.

4. Create a vinegar soak: Fill a sink or basin with equal parts water and white vinegar. Submerge the cast-iron skillet in the solution, ensuring that the rusted area is completely covered. Let it soak for at least 1-2 hours or overnight.

5. Scrub with more steel wool: After soaking, take the skillet out of the vinegar solution and scrub the rusted area again with steel wool or a stiff brush. This will help to further remove the rust.

6. Rinse and dry: Thoroughly rinse the skillet with water to remove any vinegar residue. Pat it dry using a towel.

7. Re-season the skillet: Re-seasoning is crucial to protect the cast iron from future rust and maintain its non-stick properties. Apply a thin layer of cooking oil (such as vegetable oil or flaxseed oil) to the entire surface of the skillet, inside and out. Wipe off any excess oil with a clean cloth or paper towel. Place the skillet upside down in an oven preheated to around 350°F (175°C) and bake it for about an hour. Allow the skillet to cool in the oven before removing it.

Remember, it's essential to avoid using soap or harsh chemicals on a cast-iron skillet as it can strip away the seasoning. Also, be aware that while rust can be removed, if the skillet has been heavily damaged or rusted through, it might not be possible to restore it fully. In such cases, it's best to consult with a professional or consider replacing the skillet.