Hot Can heats its own contents

Hot Can heats its own contents
Both soups and drinks are available in the Hot Can
Both soups and drinks are available in the Hot Can
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Hot Can offers a variety of flavors
Hot Can offers a variety of flavors
Both soups and drinks are available in the Hot Can
Both soups and drinks are available in the Hot Can
Using an exothermic reaction, Hot Can heats up the liquid stored inside
Using an exothermic reaction, Hot Can heats up the liquid stored inside
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Last February, the world welcomed its first self-chilling beverage. Of course, a self-chilling beverage was only of so much interest during a time when much of the world's population could just step outside its door and chill its own beverages in the open air – June might have been a better time for that one. What folks could use during the cold season is a beverage container that automatically warms its contents. That container is called the Hot Can.

The double-chambered aluminum Hot Can contains the beverage or soup in its outer chamber, and a mix of water and calcium oxide in its inner chamber. When activated, the water and calcium oxide mix, causing an exothermic reaction that heats the beverage by a total of 50 to 55 degrees Celsius in about three minutes. This means that a drink which starts out at room temperature (20ºC/68ºF) heats up to 70ºC (158ºF) – from a cold cup of mud to a piping hot cup of coffee. A polypropylene outer shell insulates the beverage for about 45 minutes and protects the hands from burns.

Using the Hot Can sounds pretty easy. You turn it upside down, remove the protective tab and press the button to begin the heat reaction. Then you shake it for 20 to 30 seconds and stand it upright until it heats up. The heat indicator label lets you know it's hot and ready with a green emblem. If it should get too hot, a red warning sign activates instead.

Because the Hot Can adds a set amount of heat to any beverage, it's designed to be stored at room temperature. Storing it in the refrigerator will mean it won't heat up to a warm drinking temperature, while storing it in a hot environment like a car in the hot sun will cause burn risks. Storing it below 5ºC (41ºF) can damage the heating element.

The Hot Can could be super-useful for everyday use as well as for specific purposes. You could grab a coffee on the way out the door to work without ever having to brew a pot or stop off at a shop. Hikers, backpackers and other outdoor users could enjoy a hot drink without worrying about lighting a stove or fire.

Hot Can launched in its home market of Malaysia in 2008 and was introduced to the U.S. market last year. It comes in a full line of beverages and soups, including coffee, hot chocolate and chicken soup. The company has been busy attending trade shows and increasing its distribution footprint. Buyers can find it online at hot-canshop.com and at independent retailers, including outdoor shops and conveniences stores in 32 states. Each can costs about US$2.40 when purchased in multi-packs.

If you don't like Hot Cans' selection of drinks and soups, gadgets like the Trekmates cooking system uses a similar design for heating up your food of choice.

Source: Hot Can

Editor's note November 2020: To the best of our knowledge, Hot Can is no longer in production.

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Oh dear. Another thing to go into the landfill. Or worse, dumped in the woods.
Kieron Williams
I have to say these have been around for about 15 years (at least). My dad used to bring them home from police firearms callouts, if the job went over 8 hours or so they were issued a "hot-can". As I recall I used to quite like the lamb hotpot.
dave be
This is much more affordable this time around.. but wolfgang puck branded a version of coffee and possibly soup as well that was sold for like $4-5 a can. It was way to pricey and faded away pretty quick.
Barneh Barnes
I agree with kieron, nescafe (coffee) did this well over 10 years ago here in the UK.
I've had self heating cans of hot chocolate in my emergency bag for over five years.
Mark B
Im pretty sure Nescafe used to sell coffee in "hotcans" around 1998?? it was pretty advanced. Came black, white or white with sugar!
Although the chemistry is different I can remember self-heating cans of soup being available in the early '60s....!
Can beat you all. They've been in Japan at least before 1990 and cheap. When I arrived here first time back then I remember going cherry blossom viewing and they had some nifty one cup sakes that heated themselves for some hot sake.
Nothing new here, food in self-heating cans was issued to US troops in WWII.
Marco Corona
Another self-heating can patent goes back to 1903 by George S. Jewett. Don't know if the can was ever mass produced for sales, though.
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