Cast iron cookware has been a staple in kitchens for generations. Its durability and ability to distribute heat evenly make it a favorite among home chefs. When it comes to cleaning, cast iron requires special care. Many of you wonder can you put cast iron in dishwasher. 

This comprehensive guide will explore the question, “Can you put cast iron in the dishwasher?” and how to clean a cast iron skillet. 

It will delve into the reasons why it is not recommended, the potential damage it can cause, and provide alternative methods for cleaning and maintaining your cast iron cookware.

Key Takeaway

Never put cast iron in the dishwasher; it damages seasoning and causes rust.
Hand wash with mild soap, water, and a non-abrasive scrubber.
Store in a dry place to maintain quality.
Dry thoroughly and apply a thin layer of oil to prevent rust.

Can You Put Cast Iron in the Dishwasher?

 Iron in the Dishwasher
Iron in the Dishwasher

The simple answer to this question is No. Dishwashers are designed to clean a variety of materials, but cast iron is not one of them. Cast iron is one of the listed items that you should not toss into the dishwasher.

A dishwasher uses nozzles to spray hot water mixed with detergent on dirty dishes over a long period of time. After that, the water drains and the dishwasher blows hot air to dry the dishes.

There are several reasons why putting cast iron in the dishwasher can be detrimental to its condition:

Stripping the Seasoning: 

Cast iron skillets require a well-seasoned surface to prevent food from sticking. The high heat and harsh detergents used in dishwashers can strip away the protective seasoning, leaving your skillet vulnerable to rust and a loss of non-stick properties.

Eventually, it ruins the purpose of using the cast iron.

Exposure to Moisture:

Exposure to Moisture

Cast iron is highly vulnerable to rust when exposed to moisture for extended periods. Dishwashers involve prolonged soaking and high water temperatures, providing the ideal conditions for rust to develop. 

Even if you control the temperature inside, the water spray will ruin the seasoning of it. And it will gain rust super fast

Heat Damage:

Dishwashers often utilize high heat for drying, which can cause the residual moisture in the cast iron to evaporate slowly. This prolonged exposure to heat can lead to warping, cracking, and damage to the skillet’s overall structure.

Harsh detergents:

Dishwashing liquid can strip away the precious seasoning, the layer of oil that builds up over time and gives cast iron its non-stick properties and rust resistance.

Watch this video to have a clear look at what happens if you put cast iron in dishwasher.

How to wash cast iron in Dishwasher?

If you absolutely must use the dishwasher, follow these tips with extreme caution:

  • Scrape and pre-rinse: Remove any food debris to prevent it from baking during the wash cycle.
  • Skip the detergent: Harsh detergents are the enemy of seasoning. Consider using a mild dish soap or even just hot water.
  • Top rack it: Place your pan on the top rack away from harsh jets and heating elements.
  • Air dry: Skip the heated drying cycle to avoid damaging the seasoning.
  • Re-season immediately: After dishwasher use, re-season your pan to replenish the lost oil and protect it from rust. 

And remember dishwashing is a gamble for your cast iron. Hand-washing is the preferred method to keep your beloved cookware in tip-top shape for years to come.    

How to wash a cast iron skillet?

While dishwashers are not suitable for cleaning cast iron, there are alternative methods that will effectively clean your skillet without compromising its integrity. Follow these steps to properly clean your cast iron cookware:

Immediate Cleaning:

After using your cast iron skillet, it’s essential to clean it promptly to prevent food particles from hardening and becoming difficult to remove. Start by scraping off any excess food with a plastic spatula or wooden spoon.      

Gentle Hand Washing:

Contrary to popular belief, cast iron can be washed with mild dish soap and warm water. Avoid using harsh abrasives such as steel wool, as they can damage the seasoning. 

Instead, use a stiff brush or non-abrasive sponge to scrub away any remaining food residue.      

Thorough Drying

After washing, ensure the skillet is completely dry to prevent rust formation. Wipe it with a clean, dry cloth or paper towel, and then place it on low heat on the stovetop to evaporate any remaining moisture.

Re-seasoning

To maintain the non-stick properties of your cast iron skillet, cast iron seasoning is very important. After drying, apply a thin layer of cooking oil or solid shortening to the entire surface of the skillet, including the handle. 

Heat your skillet in the oven at a low temperature (around 350°F) for about an hour, allowing the oil to polymerize and create a protective layer.

Check this video to learn the best way to clean and season a cast iron skillet.

Frequently Asked Questions (FAQs):

What happens when you put cast iron in dishwasher?

You should NEVER put cast iron in the dishwasher. Cast iron takes a long time to develop a nonstick surface, and dishwashing chemicals will remove it. And it will begin to rust.

Why does cast iron rust in dishwasher?

Cast iron starts rusting when it is exposed to moisture for a long time.

Should I oil my cast iron after washing?

After cleaning, make sure the cast iron is completely dry. Do not allow it to air dry. Place over medium heat on the stove to remove any leftover water. Apply a thin layer of vegetable oil and rub until well-covered and glossy. Allow it to cool fully, then store in a dry area.

Does boiling water in cast iron clean it?

It will help to remove the residue from the food you cooked. But if you do this for a long time, it will ruin the seasonings and eventually your cast iron will get rust.

Can I use sponge on cast iron?

Yes, you can use a kitchen sponge on cast iron. After you are done with your cooking on your cast iron, wash it with some warm soapy water and sponge.

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