Traditionally, it has been advised not to use soap on cast iron skillets and pans because it can remove the seasoning—a layer of polymerized oil that creates a natural non-stick surface and helps protect the pan from rust. However, modern cast iron pans are more durable and can handle mild soap when needed. Here's how you can safely use soap on cast iron:
Mild soap: If you find that your cast iron pan has stubborn residue or food particles that won't come off with regular scrubbing, you can use a small amount of mild dish soap. Avoid using harsh detergents or abrasive cleaning agents, as they can strip away the seasoning and damage the pan.
Gentle scrubbing: Use a soft brush or sponge to scrub the pan gently. Avoid using steel wool or harsh scouring pads, as they can damage the seasoning.
Rinse and dry immediately: After washing with soap, rinse the pan thoroughly with water to remove any soap residue. Then, dry the pan immediately and completely using a clean towel. Moisture is the primary enemy of cast iron, as it can lead to rust.
Re-season if necessary: If you find that using soap has removed some of the seasoning, you can re-season the pan to restore its non-stick properties and protection against rust. Simply apply a thin layer of oil to the pan's surface and bake it in the oven following the seasoning process.
It's worth noting that many cast iron enthusiasts still prefer to clean their pans without soap to preserve the seasoning and build up the pan's non-stick properties over time. The goal is to create a natural, smooth, and non-stick cooking surface through repeated use and proper seasoning.
Ultimately, the decision to use soap on a cast iron pan comes down to personal preference. If you choose to use soap, just remember to be gentle, rinse thoroughly, and dry the pan immediately to prevent rusting. With proper care, your cast iron pan can last for generations and provide you with excellent cooking results.