Washing cast iron skillets is a common practice and is essential to maintain their cleanliness and hygiene. However, there is a popular misconception that cast iron skillets should not be washed with soap and water due to concerns about damaging the seasoning—the natural non-stick coating that forms on the surface of the skillet over time.
The seasoning on a cast iron skillet is created by the accumulation of oils and fats from cooking, which polymerize and form a protective layer on the surface. This seasoning gives the skillet its non-stick properties and helps prevent rusting.
The reason some people avoid using soap and water on cast iron skillets is that harsh soaps and abrasive scrubbing tools could potentially strip away the seasoning. Instead, they opt for a gentler cleaning process to preserve the seasoning:
Hot water rinse: After cooking, some people choose to rinse the skillet with hot water to remove any food residue.
Scraping: Using a spatula or a gentle brush, they scrape off any stuck-on bits of food.
Drying: They thoroughly dry the skillet with a clean cloth or paper towel.
Oil application: Finally, a thin layer of cooking oil (such as vegetable oil, flaxseed oil, or canola oil) is applied to the skillet's surface to help maintain the seasoning and prevent rust.
It's essential to note that washing cast iron skillets with soap and water is generally safe, especially if done sparingly and using a mild dish soap. The seasoning on the skillet will naturally wear down over time with regular use, and it's normal to need to re-season the skillet periodically to maintain its non-stick properties.
Ultimately, the decision on how to clean a cast iron skillet depends on personal preference and the specific care routine that works best for each individual.