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London: You don’t need to be in a rush to drink your morning coffee while it’s still piping hot. Scientists have developed metallic beans that can keep your drink hot for up to five hours.
The beans, called Coffee Joulies, cool your drink to a drinkable temperature three times faster than normal, then maintain that temperature.
They work by absorbing the extra heat energy in the drink when it gets too hot, then releasing that stored energy in the drink to keep it at an optimum temperature as it begins to cool, reports the Daily Mail. .
Special material
While this may seem to go against the laws of thermodynamics, Coffee Joulies contain a “ special non-toxic material ” sealed within the stainless steel shells of the beans.
A spokesperson said, “This material is designed to melt at 140 degrees Fahrenheit and absorbs a lot of energy as it melts. This is how Joulies cools your coffee three times faster than normal.
“Once it reaches this temperature, the special material begins to solidify again, releasing the energy it stored when it melted. This is how Joulies keeps your coffee hot twice as long.”
Any hot drink
Using Coffee Joulies couldn’t be easier – just add a few to your drink as soon as it’s poured.
And you don’t have to be a coffee lover to get the most out of the beans – they work in any hot beverage, whether it’s tea, hot chocolate, or milk.
But the beans – which are expected to go on sale in the US soon with a retail price of $ 50 (Dh184) for a bag – only perform at their best when the cup is insulated with a lid.
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