Fill the pot with water to cover the dirty area.
Add 1–2 tablespoons of citric acid.
Boil for 10–15 minutes.
Let it cool slightly, then scrub and rinse.
Method 2: Paste
Mix citric acid with a little water.
Apply to the burnt surface.
Scrub and rinse.
✔ Excellent for stainless steel and heavily burnt pots.