Understanding Kansa and Copper
Kansa, often called bell metal or bronze, is a traditional alloy primarily composed of copper (around 78%) and tin (around 22%). This specific proportion has been refined over centuries and is prized for its durability and non-reactive properties. Pure copper, on the other hand, is a soft, reddish-brown metal that is a superb conductor of heat and known for its potent antimicrobial effects. While copper is an essential trace mineral for the body, the key difference for daily eating lies in its reactivity.
The Ayurvedic Perspective on Kansa
Ayurveda has long revered Kansa as a 'sattvic' or pure metal. Ancient texts describe it as beneficial for balancing the body's three doshas—Vata, Pitta, and Kapha. Its believed alkalizing nature helps to neutralize acidity in food, which is said to improve digestion and promote gut health. Ayurvedic physicians recommend Kansa for holistic healing and for its stress-relieving properties. The antimicrobial properties inherited from its copper content also help keep food hygienic. The Sanskrit phrase "Kansyam Buddhivardhakam" suggests that using Kansa enhances intellect.
The Reactivity Risks of Pure Copper Plates
While copper's antimicrobial properties are beneficial, its highly reactive nature makes unlined copper plates unsuitable for serving certain foods. When acidic foods like yogurt, citrus fruits, vinegar, or pickles come into contact with copper, they can cause copper to leach into the meal. Ingesting excessive copper can lead to copper toxicity, which may cause symptoms like nausea, vomiting, diarrhea, and, in severe cases, liver damage. This is why traditional copper vessels used for cooking are almost always lined with tin (a process called 'kalai') or stainless steel. Since plates are not typically lined, they are best avoided for daily meals, especially with acidic dishes.
Comparison Table: Kansa vs. Copper Plates
| Feature | Kansa (Bronze) Plate | Pure Copper Plate |
|---|---|---|
| Composition | Alloy of Copper (~78%) and Tin (~22%) | 100% Copper |
| Reactivity | Non-reactive with most foods, including acidic ones | Highly reactive with acidic foods, releasing copper ions |
| Safety for Eating | Safe for daily use with a wide range of foods | Unsafe for acidic foods; risk of copper toxicity |
| Ayurvedic Beliefs | Purifying, alkalizing, balances doshas, enhances intellect | Benefits mainly associated with drinking water stored for specific periods |
| Antimicrobial | Inherently antimicrobial due to copper content | Potent antimicrobial properties |
| Maintenance | Corrosion-resistant, easier to maintain and clean | Prone to tarnishing and requires frequent polishing |
How to Care for Kansa and Copper Utensils
To ensure the longevity and safety of your metalware, proper care is crucial. While both require attention, their maintenance needs differ due to their composition.
Caring for Kansa plates:
- Wash by hand with mild soap and warm water.
- Avoid harsh detergents or abrasive scrubbers.
- Polish with a paste of lemon juice and baking soda or tamarind and salt to restore shine.
- Dry immediately after washing to prevent water spots.
Caring for pure copper plates (if used for non-acidic foods):
- Hand wash only with a mild detergent.
- Polish frequently with a natural cleaner like lemon and salt to remove oxidation.
- Avoid dishwashers, as harsh chemicals can damage the metal.
- Dry thoroughly after every wash to prevent corrosion and oxidation.
The Takeaway
For daily dining, Kansa plates are a safer and more versatile choice than unlined copper plates. The non-reactive nature of the bronze alloy means you can safely enjoy all types of food, including those with high acidity, without the risk of metal leaching. While pure copper has powerful antimicrobial benefits, its use for eating should be strictly limited to non-acidic foods and requires meticulous care to avoid risks associated with its reactive nature. By understanding the properties and proper use of each, you can make an informed decision that aligns with both ancient wisdom and modern health awareness.
For more information on the antimicrobial properties of copper, you can refer to the research referenced by Harishyam Arts, which highlights scientific evidence supporting the traditional claims about Kansa and its copper content.
