To keep cast iron from rusting and maintain its seasoning (a layer of polymerized oil that provides a non-stick surface), follow these steps:
Season Your Cast Iron: Seasoning creates a protective layer on the surface of the cast iron. To season your cast iron, follow these steps:
a. Preheat your oven to 375°F (190°C). b. Wash the cast iron with warm, soapy water to remove any factory coatings or residues. c. Thoroughly dry the cast iron with a towel. d. Apply a thin layer of vegetable oil, flaxseed oil, or solid shortening to the entire surface of the cast iron, inside and out. e. Place the cast iron upside-down on the oven rack or a baking sheet to catch any drips. f. Bake the cast iron for about 1 hour. g. Turn off the oven and let the cast iron cool completely before removing it.
Avoid Soaking or Immersing in Water: Water is the enemy of cast iron because it can cause rust. Avoid soaking your cast iron cookware in water or leaving it submerged. Instead, hand wash it promptly using minimal water and a brush or sponge, if necessary.
Use Gentle Cleaning Techniques: Avoid using harsh soaps or abrasive materials to clean your cast iron. Instead, use a brush or non-abrasive sponge and warm water to gently clean off any food residue. If there are stubborn bits stuck to the surface, you can use coarse salt and a little oil to scrub the pan.
Dry Thoroughly: After washing, dry the cast iron cookware immediately and thoroughly using a towel. You can even place it back on the stovetop or in the oven for a few minutes to ensure it's completely dry.
Apply a Thin Coat of Oil: After cleaning and drying your cast iron, apply a thin layer of oil to the cooking surface to maintain the seasoning and protect it from moisture. You can use a paper towel to apply the oil and then store the cookware until the next use.
Store Properly: When storing your cast iron, make sure it is completely dry and store it in a dry place. If you stack multiple cast iron pieces, you can place a paper towel or a cloth between them to prevent scratching and moisture buildup.
By following these guidelines, you can keep your cast iron cookware in excellent condition, prevent rusting, and continue to enjoy its many benefits in the kitchen.