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How to Clean Stainless Steel Cookware: Burnt Dal, Rainbow Stains and White Spots

Simple ways to clean burnt dal, rainbow heat stains, white hard-water spots and oil residue from stainless steel pans, kadhais and cookers without scratching them.

Stainless steel cooking pots on a stainless steel tray

Stainless steel is the workhorse of the Indian kitchen: pressure cookers, kadhais, dabbas, patilas and thalis. It’s tough, non-reactive and lasts for decades, but it does stain. Dal scorches on the bottom, milk catches, tadka leaves a sticky film and hard water leaves white marks. Almost all of it comes off with things you already have.

What you need

  • Baking soda (meetha soda): a mild abrasive, gentle on steel.
  • White vinegar or lemon juice: mild acids that dissolve mineral spots and heat tint.
  • Dish soap and warm water.
  • A non-scratch scrubber or soft sponge, plus a soft cloth for drying.
  • Steel wool or a steel scrubber, only for heavy burns, and only if you don’t mind fine scratches.

Never mix vinegar or other acids with bleach, and don’t use bleach on steel cookware at all; it can cause pitting.

Burnt dal, rice and milk

This is the most common problem in Indian homes, often from a pressure cooker or patila left a little too long on the flame.

  1. Scrape out loose food with a wooden spatula. Don’t hack at the burnt layer with a metal spoon.
  2. Cover the burnt area with water and add 1–2 tablespoons of baking soda.
  3. Simmer for about 10 minutes, then switch off and let it cool.
  4. Scrub with a non-scratch scrubber. Most of the burnt layer should lift off.
  5. Stubborn spots: drain, make a thick paste of baking soda and a few drops of water, spread it on the burn and leave it for a few hours or overnight. Scrub again.

For a burnt pressure cooker, follow the same steps but keep the gasket and whistle out of the soaking water.

Burnt milk comes off more easily if you soak the vessel in cold water straight away. Hot water can set the milk proteins harder.

Rainbow stains (heat tint)

Those blue, gold or purple patches, usually on the base or sides of a pan, are heat tint. They form when steel gets very hot, for example during dry roasting, a high-flame tadka or when a flame licks up the side of the vessel. They’re cosmetic and don’t affect cooking.

To remove them: pour a little white vinegar onto a soft cloth and wipe the stain. It usually fades within seconds. Rinse, wash with soap and dry.

To prevent them: keep the flame under the vessel, not up the sides, and avoid heating an empty steel pan on high for long.

White spots and chalky film

White spots or a cloudy, chalky film are usually mineral deposits from hard water: calcium and magnesium left behind when water evaporates. Boiling rice or pasta can leave a similar starchy film.

To remove them: add a splash of white vinegar or lemon juice to a little water in the vessel, swirl or bring it to a gentle boil, let it cool, then wash and rinse. For a cloudy film on the outside, wipe with a cloth dipped in diluted vinegar.

To prevent them: dry steel vessels with a cloth straight after washing instead of leaving them to drip-dry. If your area has very hard water, our guide to hard water problems in the kitchen explains what else it affects.

Small pits or dark dots

Tiny pits or dark dots, often on the base, can be caused by salt left sitting in cold water. Many manufacturers suggest adding salt only once the water is boiling and stirring it in, rather than letting undissolved salt sit on the bottom of the pan. Pitting can’t be scrubbed out, but it’s usually cosmetic. Prevention is the main thing.

Sticky oil and tadka residue

Oil splatters from deep frying and tadka build up into a sticky, brownish film, especially on the outside of kadhais and around handles.

  1. Wash with hot soapy water first.
  2. Make a paste of baking soda and a little water and rub it on with a soft scrubber.
  3. For a thick build-up, simmer the kadhai in a larger vessel of water with baking soda, or leave the paste on for an hour before scrubbing.
  4. Rinse well and dry.

Everyday cleaning routine

StepWhy it matters
Let the vessel cool a little before washingPlunging a very hot pan into cold water can warp thin bases
Soak anything with stuck food in warm waterSaves scrubbing and scratches
Wash with dish soap and a non-scratch scrubberEnough for daily cleaning
Rinse wellLeftover soap can leave spots
Dry immediately with a clothPrevents white water marks
Once a week or so, a quick wipe with vinegarKeeps the shine and removes early spots

What to avoid

  • Bleach and chlorine cleaners: they can pit and stain stainless steel.
  • Leaving salty or acidic food in steel for days: tamarind, tomato-heavy gravies and pickles are best moved to glass or another container for storage.
  • Steel wool on polished or mirror-finish vessels: it leaves scratches. Save it for old, heavy-duty patilas if you need it.
  • Heating an empty pan on high: this causes heat tint and can warp a thin base.
  • Ash, sand or mud for scrubbing on newer cookware: traditional, and it works, but it’s harsh on polished finishes.

Remember that these tips are for stainless steel only. Non-stick, hard-anodised and cast iron each need gentler or different care; see our guides to non-stick cookware safety and seasoning a cast iron tawa.

Bottom line

For almost every stain on stainless steel, you need just three things: baking soda for burnt food and grease, vinegar or lemon for rainbow stains and white spots, and a soft cloth to dry every vessel straight after washing. Soak before you scrub, keep the flame under the pan, and your steel cookware will look good for decades. For more everyday cleaning shortcuts, see our Indian kitchen hacks.

Frequently asked questions

How do I remove burnt food from a stainless steel pan?

Cover the burnt layer with water, add one to two tablespoons of baking soda, and simmer for about 10 minutes. Let it cool, then scrub with a non-scratch scrubber. For very stubborn burns, repeat, or leave a thick baking soda paste on overnight before scrubbing.

What are the rainbow stains on stainless steel, and are they harmful?

They're heat tint: a thin layer that forms on the steel surface when it gets very hot. They're cosmetic, not a sign the pan is damaged. Wipe them with a little white vinegar, then wash and dry the pan.

Why does my steel cookware get white spots?

Usually from minerals in hard water, or sometimes starch from boiling rice or pasta. A splash of white vinegar or lemon juice dissolves them. Drying vessels straight after washing stops them coming back.

Can I use steel wool on stainless steel?

It works on heavy burns, but it leaves fine scratches and can dull a polished finish. Try soaking and baking soda first, and use a non-scratch scrubber for everyday cleaning. Never use steel wool on non-stick or hard-anodised cookware.

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