How to Restore and Fix a Rusty Cast Iron Potjie Pot

Ingredients

• 1 Piece Steel wool pad or wire brush (Tools)
• 500 g Coarse salt (Cleaning)
• 250 ml High-smoke point cooking oil (Canola or Sunflower) (Pantry)
• 1 Roll Paper towels or clean cotton rags (Tools)
• 50 ml Mild dishwashing liquid (Cleaning)
• 1 Bag Dry hardwood or charcoal (Tools)
• 1 Pair Heat-resistant gloves (Tools)

Cooking Steps

1. The Heavy Scrub (Remove Loose Rust) 30m

   Vigorously scrub every inch of the potjie pot (inside, outside, lid, and legs) using steel wool or a wire brush, warm water, and a touch of dishwashing liquid. Scrub until you've stripped away all loose orange rust and reached the raw grey iron beneath. Note: This is the only time soap is allowed near your potjie!

2. The Coarse Salt Polish 15m

   Pour a generous amount of coarse salt into the dry pot. Using dry paper towels or a rag, rub the salt firmly against the cast iron. The salt acts as a natural abrasive, lifting any remaining micro-particles of rust and smoothing out the pitted surface of the iron without damaging it.

3. Rinse and Bone-Dry Immediately 15m

   Rinse the pot thoroughly with warm water to remove all traces of salt and loose iron dust. Immediately dry the pot with clean towels. Cast iron rusts incredibly fast when wet, so place the pot over warm braai coals or on a low gas burner for 5 to 10 minutes to evaporate every single drop of moisture.

4. Apply the Base Oil Layer 10m

   While the pot is slightly warm to the touch, apply a thin, even coat of high-smoke point cooking oil (like canola or sunflower oil) to all surfaces—inside, outside, bottom, legs, and lid. Use a clean paper towel to buff the oil into the iron, leaving no pools or sticky puddles. It should look wet but not dripping.

5. The Ultimate Fire Bake (Seasoning) 60m

   Prepare a hot bed of wood coals (or preheat your kitchen oven to 200°C). Place the oiled pot and its lid upside down over the hot coals or on the oven rack. Let it bake for at least an hour. The high heat bonds the oil to the cast iron, creating a natural, polymerised non-stick coating that prevents future rust.

6. Cool and Store Properly 10m

   Allow the pot to cool down slowly on the coals. Once cool enough to handle, apply one final micro-layer of oil to protect it. Store your restored potjie in a dry place with the lid slightly off to allow air circulation, and stuff a few crumpled sheets of newspaper inside to absorb any ambient moisture.