Coffee Joulies

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  • Peter Theill
    Peter Theill These "beans" eat up all the extra thermal energy that makes coffee too hot so you can drink it sooner without burning your tongue
  • Peter Theill
    Peter Theill How do they do that? Their polished stainless steel shells are full of a very special phase change material (an ingredient in food) that melts at 140 F. When you put them in your coffee this PCM begins melting,...
  • Peter Theill
    Peter Theill Where does all that heat go? It's stored right inside your Coffee Joulies. When your coffee reaches 140 F (the perfect drinking temperature) the molten PCM begins solidifying again, releasing all that energy ba...
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