4.6 from happy customers

Kopero Copper Cup

Kopero Copper Cup

300 millilitres of solid copper: the compact shape the Ayurvedic tradition started with.

Regular price €29,95
Regular price Sale price €29,95
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Solid copper, no coating or inner lining Independently tested for food safety Smooth or hand-hammered
Finish
Quantity

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Order before 11:30 pm on a weekday, delivered in 2-3 working days

30-day right of return, your money back if you're not sure

Delivery across Europe

Specifications
Material
99.21% copper, 0.75% zinc (RTC Laboratory Moradabad, NABL-accredited, ASTM-1621/IS-228)
Finish
smooth or hammered
Food safety
tested by URS Products and Testing (EC 1935/2004, EU 10/2011, REACH)
Dimensions
Ø 7 x 9.5 cm
Weight
95 g
In the box
  • Copper cup, 300 ml
  • Luxury velvet carry pouch
  • Sturdy branded box
  • Scannable digital guide
Shipping and returns
We ship from the Netherlands to the whole of Europe. Order on a weekday before 11:30 pm, and your order goes out that same weekday; across Europe it usually arrives within two to three working days. You have a 30-day right of return: if you're not happy with it, send it back and get your money back. See also our shipping policy and refund policy.
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Why copper works

Kills bacteria on contact

Changes the water it touches

A mineral your body needs

Long used for skin and recovery

Three hundred millilitres, no more (Kopero Copper Cup)

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 (Kopero Copper Cup)

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.

What you actually get

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. No cap, no thread, no corners where water sits: 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.

What to watch out for

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 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.

What's included: Kopero Copper Cup

How it arrives

You unpack a sturdy branded box with a Kopero card inside: the QR code on it takes you to the digital manual. A velvet pouch comes with it too, to keep things protected on the move or in the cupboard.

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. Exactly how is in the care guide.

Composition
0,00%
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. The measurement came out at 99.21% copper and 0.75% zinc. That zinc is not an additive but a residue of the casting process: it makes the copper marginally stronger and changes nothing else. Food safety is covered by a second report, from URS Products and Testing, tested against EC 1935/2004, EU 10/2011 and REACH.

  • 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"

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 casting 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.

Your cup arrives in an elegant velvet pouch and a sturdy Kopero box.

Now you know what is in it

  • 30-day right of return
  • Order before 11:30 pm on a weekday, delivered in 2-3 working days
  • Delivery across Europe

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.

  1. 1

    Clean the cup first

    Before first use, rub the inside and outside with lemon and salt, rinse thoroughly and dry it right away.

  2. 2

    Fill it with still drinking water

    Fill the cup to the rim. There's no set amount.

  3. 3

    Set it out in the evening

    Let the water sit overnight and drink it the next morning. Cover the cup with a small plate if you leave it standing.

  4. 4

    It's for other drinks too

    The cup isn't just meant for water, even though that's the most common use. Avoid very acidic drinks like pure citrus juice.

  5. 5

    Wash it by hand

    Warm water and a soft cloth, then dry it right away.

  6. 6

    Polish it when the shine fades

    Every one to two weeks with lemon and salt. Rinse thoroughly and dry right away.

Reviews of this product

4.6 from happy customers
Lovely cup, exactly the size I was looking for.
Ruben
Verified purchase
The hammered effect makes it truly unique.
Lotte
Verified purchase
First sip and I immediately thought: hey, this water tastes different. Softer and less like the tap. Wow.
Noor
Verified purchase
I leave the water in the cup overnight. By morning the sharp chlorine taste is gone and I drink it down without effort.
Joris
Verified purchase
I bought this because of Ayurveda and tamra jal. I enjoy the morning ritual, but it was mainly the rounder taste that surprised me.
Lotte
Verified purchase
My husband picked out the copper cup in a blind test. He called the water 'calmer'. That's exactly it.
Thomas
Verified purchase
Normally I have to remind myself to drink water. From this cup it tastes fresher and I reach for another one without thinking.
Nienke
Verified purchase
The smooth rim is pleasant to drink from, and 300 ml is a good amount for my morning.
Koen
Verified purchase
The taste surprised me straight away. The water turns soft and almost slightly sweet, exactly as I'd hoped.
Eline
Verified purchase
It took a week before I understood what had changed: the water feels less hard in my mouth. Sounds odd, but I can't describe it any other way.
Pieter
Verified purchase
Powerful start to the day. A full cup, a quiet moment sitting down, and I wake up faster than when I go straight for coffee.
Henry
Verified purchase
My stomach feels calmer since I drink this water first thing in the morning. That's my own experience, of course, not a medical claim.
Niklas
Verified purchase
Rinsing it out and leaving it upside down to dry is quick and easy.
Lea
Verified purchase
In Ayurveda I read that water is kept in copper for several hours. I now do that every evening and find the taste genuinely much nicer.
Sofia
Verified purchase
Even lukewarm water tastes good from this cup. Less flat, fresher. I'm genuinely happy with it. The first morning I thought I was imagining it. A few days later I tasted the same difference again. My ordinary glass has been at the back of the cupboard ever since.
Leonor
Verified purchase
The soft patina actually gives the cup more character over time.
Ida
Verified purchase
It stands steady, feels solid and fits well in my kitchen cupboard.
Ebba
Verified purchase
Wow, water really does taste fresher from this. My ordinary glass next to it suddenly tasted dull.
Sophie
Verified purchase
I put it filled on my bedside table and drink it when I get up. The water feels soft in my mouth and my morning starts less rushed.
Milan
Verified purchase
Coming from my Ayurvedic routine I wanted an uncoated copper cup. After storing overnight I taste a clear difference, especially with our hard tap water.
Iris
Verified purchase
My daughter said out of the blue that the water was 'nicer'. She didn't even know I'd used a different cup.
Bas
Verified purchase
I'd expected copper to taste metallic. It doesn't. The water is rounder and the tap aftertaste is practically gone.
Femke
Verified purchase
The relief gives a good grip and looks beautiful in the morning light.
Joost
Verified purchase
Since getting this cup I drink 300 ml of water before my coffee. It leaves me clearer-headed and less parched in the morning.
Anouk
Verified purchase
Hard to explain until you taste it. Water doesn't turn sweet, but it does turn softer. A really nice discovery.
Tim
Verified purchase
After two weeks my mornings started to feel noticeably light and calm. The daily ritual is definitely staying.
Lucy
Verified purchase
The hammered surface sits firmly in the hand. Oddly enough the water also seems to stay cool longer, though I haven't measured it.
Marlene
Verified purchase
The cup feels solid and the rim is beautifully smooth all the way round.
Theo
Verified purchase
I only use it for still water and that tastes noticeably cleaner. My partner now has his own cup, otherwise mine keeps disappearing.
Pablo
Verified purchase
Ayurveda gave me the idea; the taste convinced me. Wow, I never thought such a simple swap could make this much difference. I've used it for three weeks now and don't skip a morning. It's only a small moment, yet it makes my start calmer. The cup is ready by the tap the night before.
Miguel
Verified purchase
Together with the copper jug it makes a lovely set on the table.
Noah
Verified purchase
The natural darkening makes every hammered facet stand out even more.
Oskar
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. 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?

No, rinse it by hand with warm water and a soft cloth and dry it thoroughly right away. The heat and harsh detergents of a dishwasher leave dull, uneven 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. Step by step instructions are in the care guide.

Not what you were after? No problem.

You have a 30-day right of return. Copper does take some getting used to: it tarnishes, it feels heavier in the hand than stainless steel, and now and then you will want to polish it. Give it a few weeks. If it is still not what you were after, send it back and get your money back.

Read the return policy
Kopero Copper Cup on a wooden table

Try it without risk

  • 30-day right of return
  • Order before 11:30 pm on a weekday, delivered in 2-3 working days
  • Delivery across Europe