The quest for that perfect cup of coffee that isn't too hot and stays warmer longer just may have found its Holy Grail in a new invention–Coffee Joulies!The stainless steel coffee beans,developed by inventors Dave Petrillo and Dave Jackson,contain a proprietary substance called Phase Change Material(PCM)that melts at 140°F,which is the optimum temperature for drinking something hot without burning.PCM performs dual functions.
First,they absorb extra thermal energy from liquids that are too hot three times faster than standard cooling,and secondly,they release the absorbed energy as they re-solidify at slightly cooler temperatures,reheating the coffee in your cup.The two Daves affirm that Joulies dropped in a container of coffee will stay at 140 degrees for up to five hours!
Ceramic cups lose too much heat through their material.Therefore,the Coffee Joulies work best with thermal insulated coffee mugs,which the company also has available.
