Coffee Joulies Promise Less Burning And More Drinking

By David Ponce The Coffee Joulies will cool down your coffee three times faster than normal, and will keep it at optimum temperature twice as long. The bean-shaped stainless steel shells contain a proprietary phase change material that is solid at room temperature. Once submerged in hot liquid, the material melts, absorbing heat in the process and cooling your drink. It gives this heat