Keep coffee at the right temperature.
How to keep coffee at the right temperature?Every day over 2 billion people drinks coffee at least once a day. The coffee can be too hot, too cold or just perfect. 
Unfortunately, the time of “just perfect” moment in always too short. To help make that middle ground last longer, Coffee Joulies are small devices shaped like stone, which can be immersed in hot drink. Those Coffee Joulies are cooling drink while it is too hot, and then heating it as it cool down. Each Joulie is comprised of a thin, hollow stainless-steel shell filled with a lightweight, temperature-mitigating material; all told, they’re only 50 percent heavier than an ice cube of the same size, and they sink and stay out of the way in a user’s beverage. Constructed of all food-grade materials, the small devices are roughly half the size of a standard chicken’s egg and are each designed to regulate the temperatuure of about 5 oz. 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, then they slowly release that energy to maintain ideal drinking temperature for as long as possible.Which moment of the day is the best? The answer is the time when we are drinking coffee. So let this moment last longer.
