Finally a really beautiful copper cup, just what you are looking for. Lovely product, beautifully packaged and delivered quickly. Recommended!
Geert
Verified purchase
What makes this special
The most original shape
Of the whole collection, this open cup stays closest to the classic Ayurvedic shape: compact, easy to hold and free of frills.
300 ml of solid copper
No coating, no inner lining. You use and clean the material exactly as it is.
Independently tested for food safety
Tested to European food safety standards; both the migration and odour/taste tests passed. Read the full study under What does research say about copper?
Smooth or hammered
Only the surface differs. Smooth gives a calm, mirror-like surface; hammered is hand-worked into a lively pattern.
A colour change that comes with pure copper
Solid copper changes colour a little on its own as you use the cup. That's completely normal, and even a sign of pure, uncoated copper. If you prefer the shine, simply polish the cup with lemon and salt (not too hard: salt is mildly abrasive and dissolves well in the lemon juice). Exactly how is in the care guide.
Composition
99.21%
copper
99.21% copper, measured independently
The material is analysed by RTC Laboratory in Moradabad, a NABL-accredited lab, tested to ASTM-1621 and IS-228. In the sample that was analysed the measurement came out at 99.21% copper and 0.75% zinc; the remaining 0.04% falls within the measuring range of the analysis. Food safety is covered by a second report, from URS Products and Testing: tested against EC 1935/2004 and REACH, using the heavy metal limits from EU 10/2011 as the benchmark.
- 99,21% copper
- 0,75% zinc
- 0,04% remainder
- RTC Laboratory Moradabad
- composition, NABL-accredited
- URS Products and Testing
- food safety, EU regulation
- 19 heavy metals
- every one measured as "Not Detected"
What you actually get
In the box
- Copper cup, 300 ml
- Luxury velvet carry pouch
- Luxury black branded box
- Card with a QR code to the digital guide
The cup is the original form of tamra jal. Before there were bottles with screw caps, a copper cup of water simply stood beside the bed in the evening and was drunk in the morning. Three hundred millilitres is exactly what you finish in a swallow or two.
That also makes this the simplest way to try the ritual. Fill, leave, drink, rinse and let it dry upside down. Where the habit comes from is set out in the article on tamra jal.
The cup comes smooth and hammered. Smooth keeps the surface even and quiet; hammered is worked by hand and carries its own pattern that breaks the light. The copper underneath is the same either way. The cup is formed from a single piece of copper, with no seam and no solder.
There is another reason copper became the tradition. In EPA tests, cleaned copper killed more than 99.9% of bacteria such as MRSA and E. coli within two hours, and since 2008 it has been registered in the United States as an antimicrobial material. It is also a trace element your own body uses, from energy metabolism to the transport of iron in your blood. Stainless steel and plastic are inert and do neither. The evidence is in can copper really kill bacteria.
How to get the most out of your copper
Fill the cup with still water. Carbonated water, lemon water and other acidic drinks dissolve copper faster and belong in glass. Do not leave water standing in it for more than a day either; the ritual is one night, not one week. On how much per day, see this article.
Hand wash, no dishwasher. Warm water and a soft cloth are enough; lemon and salt (not too hard: salt is mildly abrasive and dissolves well in the lemon juice) polish the shine back. The full routine is in the care article.
Discolouration is part of it. Pure copper without a coating grows darker the more you use it, and it can always be polished back. Why is my copper turning green or black explains what you do and do not need to do.
Settled in, in six steps
From the first clean to your steady water ritual. Rinse, fill, leave it overnight: there is not much more to it.
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Clean the cup first
Rub the cup inside and out with lemon and salt (not too hard: salt is mildly abrasive and dissolves well in the lemon juice). Rinse well and dry right away.
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Fill it with still drinking water
Fill the cup to the rim. There is no set amount.
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Set it out in the evening
Let the water sit overnight and drink it in the morning. Cover the cup with a small plate.
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It's for other drinks too
Fine for other drinks too; water is the most common. Avoid very acidic drinks like pure citrus juice.
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Wash it by hand
Warm water and a soft cloth, then dry right away.
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Polish it when the shine fades
Every one to two weeks with lemon and salt (not too hard: salt is mildly abrasive and dissolves well in the lemon juice). Rinse well and dry right away.
Read the full guide
The packaging also carries a QR code that takes you straight to this guide.
Simple in shape, strong in material
See why this copper cup works just as well in your morning ritual as it does on a set table.
RTC Laboratory measured 99.21% copper and 0.75% zinc under ASTM-1621 and IS-228. This zinc comes from the production process and isn't an added extra.
Smooth feels calm and minimal; hammered catches the light in a lively pattern.
The cup was tested to the relevant European food safety standards; the migration and odour/taste tests both passed.
In the velvet pouch you keep it safe and take it along.
You unpack a luxury black branded box. So you can give it away straight from the box, without wrapping anything around it.
A Kopero card is inside the box. The QR code on it takes you to the digital manual.
Why this cup
300 ml
Empty in a sip or two
Open
No cap, no corners where water sits
99.21%
Copper, no coating, independently measured
Tested
Food safe to EU standards, none of 19 heavy metals detected
Pouch
Velvet pouch for storing and carrying
>99.9%
Bacteria killed in lab tests, within two hours
Water
Copper changes the water it touches
For life
Polish it back, and melting copper down costs it nothing
Three hundred millilitres, no more
No cap, no handle, no thread: a straight copper cup you finish in one go. The smooth wall keeps the whole thing as quiet as it can be.
Small enough for a bedside table
Seven centimetres wide, nine and a half tall. It sits beside a bed or on a shelf without asking for space, which is exactly what the evening ritual needs.
Manufacturer and product information
- Manufacturer
- Kopero is a brand of JL Enterprises, Torenlaan 5, 1402 AT Bussum, the Netherlands.
info@kopero.nl - Product
- Kopero Copper Cup · Smooth
EAN 8720726791496 - Safe use
- Fill the product with still drinking water only. Acidic drinks such as fruit juice, soft drinks and lemon water dissolve copper faster and belong in glass. Do not leave water standing in it for more than a day. Wash by hand, not in the dishwasher. If you have Wilson’s disease or another condition in which copper accumulates, talk to your doctor first.
Thirty days to decide
Unpack it at your own pace, feel the weight and see whether the size suits you. If it is not for you, send it back within thirty days and get your money back. If you use it for longer than you need to judge it, we may deduct for loss of value. You arrange the return yourself with whichever carrier suits you best, or you ask us for a return label. The cost of sending it back is yours.
Read the return policyReviews of this product
4.6 (38 reviews)
Translated from Dutch
Handy size. Bought 4 straight away
Yaro
Verified purchase
Beautiful copper. I still need to test it with water, but it looks promising
Coert
Verified purchase
Delivered quickly. Looks good
Dylan
Verified purchase
Beautiful pure copper. Good quality. Great purchase
Moes
Verified purchase
Nice size and delivered quickly
Mikail
Verified purchase
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Frequently asked questions about this product
What's the best way to use the cup?
Of the whole collection, the cup stays closest to the original Ayurvedic shape: open, easy to hold and easy to clean. The most common ritual is to fill it with still water in the evening, cover it with a small plate, and drink it empty the next morning, but the cup works just as well for everyday use at the table.
Can I use the cup for drinks other than water?
You can, although water is the most common and best-researched use. Avoid very acidic drinks like pure citrus juice or vinegar-based drinks, as these attack the copper faster than neutral water. Don't leave any drink in the cup for longer than a day.
What's the difference between the smooth and the hammered finish?
Just the finish: material, a 300 ml capacity and quality are the same. Both are formed from a single piece of copper, with no seam and no solder. The smooth cup has a calm, mirror-like surface, while the hammered cup is hand-worked into small facets that play with the light and give the cup a bolder, more handcrafted look.
Can the cup go in the dishwasher?
Rinse it by hand with warm water and a soft cloth and dry it thoroughly right away. That keeps the surface even; the heat and harsh detergents of a dishwasher leave dull patches on solid copper.
The cup is discolouring, what should I do?
No problem: that's completely normal, and even a sign of pure, uncoated copper. If you want the original shine back, simply polish the cup with lemon and salt (not too hard: salt is mildly abrasive and dissolves well in the lemon juice). Step by step instructions are in the care guide.
Together for your morning ritual
Clean your tongue, then have your morning water. Two products for one everyday routine.
30-day right of return
- Order before 11:30 pm, usually delivered in 4-5 days Temporarily out of stockA new delivery date has not yet been confirmed.
- Ships from Tilburg, the Netherlands
Kopero Copper Cup
Order before 11:30 pm, usually delivered in 4-5 days
Temporarily out of stockA new delivery date has not yet been confirmed.
€29,95