Can Cast Iron Be Put in the Dishwasher? Debunking the Myth and Tips for Proper Cast Iron Care

By sarvottam

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Cast iron cookware has long been praised for its exceptional heat retention and versatility in the kitchen. However, when it comes to cleaning, there’s often confusion and uncertainty surrounding the question: Can cast iron be put in the dishwasher? In this comprehensive guide, we’ll debunk the myth and provide you with essential tips for properly caring for your cherished cast iron cookware.

Understanding Cast Iron Cookware

Before we dive into the dishwasher dilemma, let’s understand why cast iron is so beloved by chefs and home cooks alike. Cast iron cookware is made by pouring molten iron into molds, resulting in a sturdy and robust product. The surface of cast iron is naturally non-stick when properly seasoned, making it perfect for searing, frying, baking, and more. Its ability to evenly distribute heat ensures consistent cooking results, while the durability of cast iron allows it to last for generations with proper care.

The Myth: Dishwasher Safe Cast Iron

One of the most common misconceptions is that cast iron can be put in the dishwasher. The truth is, cast iron cookware should never be placed in the dishwasher, as it can lead to irreversible damage. Dishwashers use high temperatures and harsh detergents that strip away the seasoning—a protective layer formed by the polymerized oil—which is essential for preventing rust and maintaining the non-stick surface. Additionally, the high-pressure water jets in dishwashers can cause chipping or cracking in the cast iron, rendering it unusable.

The Proper Care for Cast Iron

Now that we’ve clarified the myth, let’s explore the proper care and cleaning methods for cast iron cookware.

  1. Hand Washing with Minimal Soap: The best way to clean cast iron is by hand washing it with minimal soap and warm water. Avoid using heavy-duty soaps or scouring pads, as they can damage the seasoning. Gently scrub the cookware with a soft brush or sponge, and rinse it thoroughly.
  2. Dry Immediately: After washing, it’s crucial to dry the cast iron cookware immediately. Water can promote rusting, so use a clean towel to wipe away all moisture.
  3. Re-Seasoning: Over time, the seasoning on cast iron can wear off, especially after using soap for cleaning. To re-season the cookware, rub a thin layer of vegetable oil or shortening on the surface. Place the cookware upside down in the oven and bake it at 350°F (175°C) for an hour. This process will restore the non-stick surface and protect the cookware from rust.
  4. Avoid Soaking: Never soak cast iron cookware, as it can lead to rusting. If food is stuck on the surface, fill the cookware with warm water and let it sit for a few minutes. Then, gently scrub away the residue.
  5. Use Wooden or Silicone Utensils: When cooking with cast iron, use wooden or silicone utensils to avoid scratching the surface. Metal utensils can damage the seasoning and create rough spots where food can stick.
  6. Storing Properly: Store cast iron cookware in a dry place with enough air circulation to prevent moisture buildup. Avoid stacking multiple pieces together, as they can trap moisture.

By following these care tips, your cast iron cookware will continue to serve you and your family for years to come. The seasoned surface will improve over time, enhancing the flavors of your dishes and making your cast iron a treasured kitchen heirloom.

Frequently Asked Questions (FAQs)

  1. Can I use soap to clean cast iron cookware? Yes, you can use a minimal amount of soap for cleaning, but avoid heavy-duty soaps and scouring pads that can damage the seasoning.
  2. How do I remove rust from cast iron? To remove rust, scrub the affected area with steel wool until the rust is gone. Then, re-season the cookware to prevent further rusting.
  3. What oil should I use for re-seasoning? You can use vegetable oil, canola oil, or shortening for re-seasoning cast iron cookware.
  4. Can I cook acidic foods in cast iron? While cast iron is excellent for most types of cooking, it’s best to avoid cooking highly acidic foods like tomatoes for extended periods, as it can break down the seasoning.
  5. How often should I re-season cast iron? Re-seasoning is typically needed when the surface starts to lose its non-stick quality or shows signs of rust.
  6. Can I use metal utensils with cast iron? It’s best to use wooden or silicone utensils to avoid scratching the surface of cast iron cookware.
  7. Can I store food in cast iron cookware in the refrigerator? It’s not recommended to store food in cast iron cookware in the refrigerator, as the prolonged contact with acidic or salty foods can damage the seasoning.
  8. Is it safe to cook with cast iron on a glass stovetop? Yes, cast iron is safe to use on glass stovetops, but avoid sliding the cookware to prevent scratching the surface.


Cast iron cookware is a treasure in any kitchen, providing exceptional cooking performance and lasting durability. While it’s not dishwasher safe, proper care and maintenance will keep your cast iron cookware in prime condition for generations. Hand washing with minimal soap, immediate drying, and regular re-seasoning will ensure that your cast iron cookware remains non-stick, rust-free, and ready to serve up delicious meals for years to come. Embrace the tradition of cooking with cast iron, and you’ll enjoy the culinary benefits it brings to your table.

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