More than 2.25 billion cups of coffee are consumed every day, with drinkers invariably finding themselves walking a fine line between “too hot” and “too cold”.
Aiming to make that middle ground last longer, Coffee Joulies are stone-like devices that can be immersed in hot drinks – cooling them while they’re too hot and heating them as they cool down.
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Invented by entrepreneurs in the United States, each Joulie is comprised of a thin, hollow stainless steel shell filled with a lightweight, temperature-mitigating material.
Constructed from food-grade materials, the small devices are roughly half the size of a standard chicken’s egg, and are designed to regulate the temperature of about five ounces of liquid.
Users simply put the volume-appropriate number of Coffee Joulies into their hot drink as soon as it’s poured.
The devices will then absorb heat from the liquid to quickly get it to the right temperature. They then slowly release that energy to maintain an ideal drinking temperature for as long as possible.
As consumers become increasingly fussy about their coffee, this kind of device will certainly stand out in the market. What other ideas might be applied to the coffee craze?