Coffee Joulies absorb energy from your coffee when it is super hot and then cool it down to a drinkable temperature. They then release that stored energy back into your coffee keeping it in the right temperature range for twice as long.
What the heck?
I wasn’t quite sure about these little guys at first but after doing some research and reading through the reviews, I’m almost convinced. Naturally, I’d have to test them out before I’m completely convinced but I doubt we will be seeing them around our parts for sometime.
Two friends, Dave and Dave developed Coffee Joulies and started out making them by hand. In an attempt to raise $9500 to cover half the cost of making the Jouiles mechanically, they posted a video on Kickstarter. The pre-order campaign was such a success that they ended up raising $306,944 and are now manufacturing the Joulies full time.
In his review of the Jouiles Zachary Carlsen of Sprudge.com gives a good explanation of what makes them so special.
We love coffee as it cools. When it’s at its sweet spot, which we believe to be around 135-150 degrees (57 – 65 C), the sweetness, acidity and mouth feel are at their most balanced and beautiful. The Joulies didn’t result in a coffee that stayed hot hot hot, but rather, they seem to have extended that sweet spot for a much longer time than the laws of thermodynamics would naturally allow.
To some, this product is an answer to a question nobody asked. But in a very real way, it could be a revolutionary accident. This might even change the way we cup and evaluate coffee. One thing is certain: lengthening the enjoyment of an excellent cup of coffee is a very good thing.