How to Clean and Season Cast Iron Cookware — Never Use Soap (Or Should You?)

Cast Iron and Texas — A Love Story

Walk into any kitchen in Conroe, The Woodlands, or anywhere in North Houston and you are likely to find at least one cast iron skillet. Texans love cast iron for good reason — it is indestructible, distributes heat evenly for searing steaks, and gets better with age. Many families in the area have skillets passed down through generations. But the care advice surrounding cast iron is full of myths and contradictions.

The most common myth is that you should never use soap on cast iron. That was true decades ago when dish soap contained lye, which stripped seasoning aggressively. Modern dish soap is gentle enough that a small amount will not harm a well-seasoned skillet. That said, there are still rules to follow.

How to Clean Cast Iron After Cooking

For Light Cleanup

1. While the skillet is still warm (not hot), rinse under hot running water.
2. Use a stiff brush or plastic scraper to remove food residue. Chain mail scrubbers work exceptionally well.
3. Dry immediately and thoroughly with a kitchen towel — never air dry, as moisture causes rust.
4. Place the skillet on a burner over low heat for one minute to evaporate any remaining moisture.
5. Apply a thin layer of cooking oil (vegetable, canola, or flaxseed) with a paper towel.

For Stuck-On Food

Fill the warm skillet with about an inch of water and bring it to a simmer on the stove. The steam loosens stuck food. Scrape with a wooden spatula or plastic scraper, then follow the standard cleaning steps above.

The Great Soap Debate — Settled

Modern dish soap like Dawn or Palmolive is perfectly safe on seasoned cast iron. The seasoning is polymerized oil — a hard, plastic-like coating bonded to the iron at a molecular level. Mild soap will not strip it. What WILL damage seasoning is soaking in water, running through the dishwasher, or using oven cleaner. The rule is simple: a quick wash with soap is fine. Prolonged water exposure is not.

Never put cast iron in the dishwasher. The prolonged exposure to water and harsh detergent will strip all seasoning and cause rust within a single cycle.

How to Season Cast Iron

Seasoning is the process of baking oil onto the iron to create a non-stick protective layer. You should season your skillet when it looks dull, feels rough, or food starts sticking.

1. Preheat your oven to 450 degrees Fahrenheit.
2. Wash the skillet with warm soapy water and dry completely.
3. Apply a very thin layer of flaxseed oil, vegetable oil, or shortening to the entire skillet — inside, outside, and handle.
4. Wipe off excess oil with a clean paper towel until the surface looks almost dry. Too much oil creates a sticky, uneven finish.
5. Place the skillet upside down in the oven on the middle rack with a sheet of foil on the rack below to catch drips.
6. Bake for one hour, then turn off the oven and let the skillet cool inside.

Repeat this process 2-3 times for a new or stripped skillet. For maintenance, one round after cleaning is sufficient.

Rescuing a Rusty Cast Iron Skillet

Found a rusty skillet at a garage sale in Magnolia or inherited one from a relative? Rusty cast iron is not ruined — it just needs restoration.

• Scrub the rust with steel wool or a metal chain mail scrubber until you reach bare metal
• Wash thoroughly with warm soapy water
• Dry immediately and completely
• Season the skillet using the oven method above — repeat 3-4 times to build a good base layer

In our humid North Houston climate, rust forms faster on unseasoned iron. If you are storing cast iron long-term, apply a heavy coat of oil and wrap in a dry towel. Avoid storing with the lid on, as trapped moisture accelerates rusting.

How This Relates to Kitchen Cleaning

At SparkTex Cleaners, we know that a clean kitchen means understanding what each surface and piece of cookware needs. Our house cleaning and deep cleaning services treat every material appropriately — we will not toss your cast iron in a sink of soapy water and we will not use acidic cleaners on your stone countertops. Serving families across Conroe, The Woodlands, Spring, Humble, and all of North Houston, we clean with the same care you would.

A well-seasoned cast iron skillet is the best non-stick surface money can buy. It just asks for a little respect in return.