Preheat cast iron slowly and add oil before food to prevent sticking.
- Reseason with a thin layer of high-smoke-point oil when the surface dulls.
- Dry thoroughly after washing and store with a light oil coat to avoid rust.
Why does food stick to cast iron?
Food sticks when the pan lacks a smooth, polymerized seasoning layer. Seasoning is oil baked into the iron. It creates a nonstick surface. Sticking also happens when the pan is too hot or too cold. Cold oil and cold food bond to the metal. Moisture in food causes steam and sticking. Acidic ingredients like tomatoes can strip seasoning. Over-washing with soap removes protective oils. Rust from improper drying creates rough spots.
How to fix sticking food in a cast iron skillet
First, loosen stuck bits with a spatula and warm water. Scrape gently with a chainmail scrubber or coarse salt. Rinse and dry the skillet completely. Heat it on low to evaporate all moisture. Apply a thin layer of neutral oil like canola or grapeseed. Heat until the oil smokes slightly, then let it cool. Wipe off excess oil. This reseasoning creates a fresh nonstick layer. Repeat if sticking persists.
How to prevent food from sticking next time
Preheat the skillet slowly for 5 to 10 minutes on medium-low. Add oil and let it shimmer before adding food. Pat food dry with paper towels to remove surface moisture. Room-temperature food sticks less than cold food. Use enough oil to coat the bottom thinly. Avoid crowding the pan; cook in batches. Let food sear undisturbed before flipping. Use metal or wooden utensils that won't scrape seasoning.
When should you reseason or replace your cast iron skillet?
Reseason when the surface looks dull, grey, or sticky. If food sticks even after proper preheating and oiling, seasoning may be worn. Strip and reseason if rust spots appear. Replace the skillet if it has cracks, deep pits, or warping. A cracked pan can break during cooking. Warped pans heat unevenly and cause sticking. Rust that won't scrub off may indicate damage. Most cast iron lasts decades with care.
Which oils work best for seasoning and cooking?
Use oils with high smoke points for seasoning. Flaxseed, grapeseed, and canola oil polymerize well. For everyday cooking, use oils like avocado or vegetable oil. Butter and olive oil burn at high heat and cause sticking. Avoid using too much oil; a thin layer is enough. Reapply oil after each cleaning to maintain the seasoning. Store the skillet dry with a light oil coat.