Enjoying a cup of coffee has always been a balancing act: First, you might have to wait for it to cool; then you have to drink it before it gets cold. The Ember Ceramic Mug ($80) does away with that hassle by keeping your brew at its optimal temperature — 136 degrees, according to scientific studies — for hours on end. The mug has heating elements in its walls that adjust constantly to create convection currents and maintain a uniform temperature throughout. Though the mug may seem extravagantly priced, "if you're a heavy javahead, there's nothing more satisfying than never getting a bad sip."
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