How to Clean Brass Utensils: 4 Traditional Indian Methods

By Saran Reddy, Founder — InstaCuppa | May 9, 2026 | 8 min read | Last updated: May 9, 2026

Brass utensils have been part of Indian kitchens for centuries. From puja thalis to serving bowls, brass adds warmth and tradition to every home. But brass tarnishes quickly — it turns dark, dull, and sometimes greenish within days.

The good news: you do not need expensive metal polish. Four kitchen ingredients work just as well. Each method below is grounded in chemistry, not guesswork.

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Why Does Brass Turn Dark?

Quick answer: Brass reacts with air and moisture to form a dark oxide layer called patina. This is oxidation — the same process that turns iron to rust, but brass does not corrode through.

Brass is an alloy of copper and zinc. When exposed to air and moisture, the copper in brass oxidises. This creates a dark layer on the surface. In humid climates (common across India), this happens faster. The greenish colour you sometimes see is copper carbonate — formed when brass reacts with carbon dioxide in the air.

This tarnish is only on the surface. The brass underneath is perfectly fine. All four cleaning methods below work by dissolving this oxide layer with mild acids.

Method 1: Tamarind + Salt (Traditional Favourite)

Quick answer: Tamarind paste + salt is the oldest and most trusted Indian method. The tartaric acid in tamarind dissolves the dark oxide layer. Salt adds gentle scrubbing power.

What you need: A small ball of tamarind pulp, 1-2 teaspoons of salt.

Steps:

  1. Make a thick paste by mixing tamarind pulp with salt
  2. Rub the paste onto the brass surface in small circles
  3. Let it sit for 5-10 minutes for heavy tarnish
  4. Scrub gently with a soft cloth
  5. Rinse with clean water and dry immediately

Why it works: Tamarind contains tartaric acid — a natural organic acid that dissolves copper oxide. The salt acts as a mild abrasive to lift the loosened tarnish. This method has been used in Indian households for generations, and the chemistry behind it is well understood.

Best for: Regular cleaning of brass pooja items, plates, and glasses. Works well on both light and heavy tarnish.

Method 2: Lemon + Baking Soda

Quick answer: Lemon juice + baking soda creates a fizzing paste that cuts through tarnish fast. This is the quickest method for moderate tarnish.

What you need: Juice of 1 lemon, 2 tablespoons baking soda.

Steps:

  1. Mix baking soda with lemon juice to form a paste (it will fizz — this is normal)
  2. Apply the paste to the brass surface
  3. Let it sit for 5-10 minutes
  4. Rub gently with a soft cloth in circles
  5. Rinse thoroughly and dry immediately to prevent water spots

Why it works: Citric acid from lemon dissolves the oxide layer. Baking soda provides gentle abrasion. The fizzing reaction helps lift dirt from crevices and patterns.

Best for: Quick cleaning sessions. Works faster than tamarind for moderate tarnish.

Method 3: Vinegar + Salt

Quick answer: White vinegar + salt is the strongest natural method. Use it for heavily tarnished brass that other methods cannot clean.

What you need: Equal parts white vinegar and salt (about 2 tablespoons each).

Steps:

  1. Mix vinegar and salt into a paste
  2. Apply to the brass surface generously
  3. Let it sit for 10-15 minutes
  4. Scrub with a soft cloth
  5. Rinse very thoroughly — vinegar smell lingers if not rinsed well
  6. Dry immediately

Why it works: Acetic acid in vinegar is slightly stronger than citric acid. This makes it more effective on heavy, old tarnish. The salt adds scrubbing action.

Best for: Heavily tarnished brass items that have not been cleaned in months. Requires thorough rinsing to remove the vinegar smell.

Method 4: Curd / Buttermilk Soak

Quick answer: Soaking brass in curd or buttermilk for 1-2 hours is the gentlest method. Perfect for delicate items with intricate designs.

What you need: Enough curd or buttermilk to cover the brass item.

Steps:

  1. Place the brass item in a bowl
  2. Cover completely with fresh curd or buttermilk
  3. Let it soak for 1-2 hours
  4. Remove and gently rub with a soft cloth
  5. Rinse with water and dry immediately

Why it works: Lactic acid in curd and buttermilk is mild enough to dissolve tarnish without damaging the brass surface. The liquid medium prevents scratching — making it ideal for items with fine carvings or patterns.

Best for: Decorative brass items, intricate pooja utensils, and antique pieces where you want to avoid any risk of scratching.

Comparison: Which Method Should You Use?

Method Speed Strength Best For Risk
Tamarind + Salt 10-15 min Medium Regular cleaning Very low
Lemon + Baking Soda 5-10 min Medium-High Quick cleaning Low
Vinegar + Salt 10-15 min High Heavy tarnish Low (rinse well)
Curd Soak 1-2 hours Gentle Delicate items Very low

How to Keep Brass Shiny Longer

Quick answer: A thin oil coat after cleaning slows retarnishing. Store brass in airtight spaces to limit air exposure. Clean lightly every 1-2 weeks.
  • Oil coat: After cleaning and drying, rub a thin layer of coconut or cooking oil on the surface. This creates a barrier against air and moisture. Remove the oil before using the item for food.
  • Store covered: Wrap cleaned brass in soft cloth or keep in closed cabinets. Open-shelf brass tarnishes faster.
  • Regular light cleaning: A quick tamarind rub every 1-2 weeks prevents heavy tarnish from building up. Removing light tarnish is much easier than cleaning months of buildup.
  • Dry immediately: Water spots speed up tarnishing. Always dry brass items completely right after washing.

Frequently Asked Questions

Can I use steel wool to clean brass?

No. Steel wool scratches brass permanently. Brass is a soft metal. Use only soft cloths, sponges, or soft brushes. For stubborn tarnish, increase the soaking time rather than scrubbing harder.

Is it safe to eat from brass utensils?

Yes, brass is safe for eating when properly cleaned and maintained. Avoid using brass for acidic foods like lemon juice or tomato-based dishes — the acid can react with the metal. Many Indian families have used brass for eating and cooking for centuries.

How often should I clean brass utensils?

Clean brass utensils every 1-2 weeks with a light tamarind or lemon rub. This prevents heavy tarnish from building up. Deep cleaning with vinegar or long curd soaks can be done monthly or when heavy tarnish is visible.

Does the tamarind method work on copper too?

Yes. Tamarind + salt works on both brass and copper because both metals tarnish through similar oxidation processes. Copper tarnishes faster than brass, so you may need to clean it more often.

Why does brass turn green?

Brass turns green when the copper in the alloy reacts with carbon dioxide and moisture in the air. This forms copper carbonate — a green substance called verdigris. It is a surface reaction only and does not damage the brass underneath. Any of the four cleaning methods in this article will remove it.

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Sources & References

  1. Copper and brass oxidation chemistry — CRC Handbook of Chemistry and Physics
  2. Tartaric acid in tamarind — Journal of Food Science and Technology
  3. Traditional Indian cleaning practices — National Institute of Nutrition, Hyderabad
Saran Reddy

Founder, InstaCuppa | Building kitchen tools that give busy Indian families their time back

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