Why does rust form in a cast iron pan?

Cast iron doesn't have a protective coating like non-stick pans. The material reacts directly to moisture. Rust usually occurs due to:

• Leaving the pan wet for too long
• Letting it air dry instead of drying it
• Storing it in a damp cupboard, or damaged or worn seasoning (grease layer).

Supplies needed to remove rust

• Warm water
• Dish brush
• scouring pad or steel wool (fine)
• Kitchen paper or clean cloth
• Neutral oil (sunflower, rapeseed or linseed oil)
• Oven or hob

Step-by-step plan

Scrub the rusty areas with warm water and a brush or scouring pad.
For stubborn rust, you can use steel wool. This won't damage the pan. Don't be afraid to scrub vigorously. You're only removing rust and old grease, not a "protective layer."

Rinse the cast iron pan and dry it immediately with a cloth.
Then place the pan over low heat for 2–3 minutes to evaporate any residual moisture. It's important that the pan is dry to prevent new rust.

Finally, rub your cast iron pan with a thin layer of oil! This will protect your cast iron pan from rust, create a nonstick surface, and extend its lifespan.

How do you prevent rust?

To prevent rust, it is wise to pay attention to the following things:

• Never soak your pan in water.
• Dry it thoroughly after washing and heat it briefly if necessary.
• Lightly grease your pan after each use.
• Store your pan in a dry place
• And lastly, do not use the dishwasher.