In the spring, Cory and I both linked to the Kickstarter campaign for Coffee Joulies. Here was the promise of these intriguing metallic lozenges:
Coffee Joulies work with your coffee to achieve two goals. First, they absorb extra thermal energy in your coffee when it's served too hot, cooling it down to a drinkable temperature three times faster than normal. Next, they release that stored energy back into your coffee keeping it in the right temperature range twice as long.
Well, Marco Arment the creator of the fabulous Instapaper
bought some Coffee Joulies and ran them through some tests. His conclusion: they aren't worth two dead flies.
I could do more tests with different conditions, but I honestly don’t want to spend another four hours to reinforce what seems pretty clear already: Coffee Joulies do work, but their effect isn’t very strong, and it’s nowhere near their claims that the drink “will be ready to drink three times sooner and will remain hot twice as long.” In fact, the effect is barely noticeable.
I imagine they’d fare well in an all-day test in a vacuum mug or bottle, but the effect is going to be similar to my insulated-mug test: an improvement, but not by much.
UPDATE: The makers of the Coffee Joulies have responded in the comments. They say, "We have run our own tests in literally dozens of scenarios, and the performance varies from greatly exceeding our claims to situations like Marcos"
Coffee Joulies review (Thanks, Jeff!)
Neglected public payphones in New York City are being turned into “GuyFi” stations: a place where one can rub one out for the sake of “stress relief.” Annalee Newitz reports on the wank booths from a company named “Hot Octopus”… The company reported that at least 100 men used the booth on its opening day […]
You’d be forgiven for thinking the videocassette format long-dead, but it turns out that Betamax is still around. Sony is finally going to withdraw tapes from sale, bringing a 40-year story to an end. The last recorders were sold in 2002. ベータビデオカセットおよびマイクロMVカセットテープ出荷終了のお知らせ [Sony; via The Verge]
A leaked Comcast memo discloses that the company’s consumer data caps have nothing to do with network congestion, contrary to its public claims. The internet service provider has often complained (such as when lobbying against net neutrality) that it must impose limits on service to prevent network congestion. The argument suggests that these measures are […]
How do Google and YouTube really work? It turns out, Python kind of runs things around those parts. And with this bootcamp, you’ll get whipped into shape and ready to start programming yourself. Whether you’re a Python pro and just want to sharpen your skills, or a total tech newbie with little or no coding […]
Take a deep breath. Now exhale. Wouldn’t that whole breathing thing be a lot better with an amazing vape in your hands? How about a vape that’s specifically engineered and designed for dry leaf and crazy easy to both use and clean? You can save 28% right now when you nab this new FEZ Vaporizer […]
Whether you want to take your career up a notch or simply secure your computer against hackers, this course bundle is for you. Don’t worry if you don’t know much about programming or coding, this set of lessons will drop major knowledge on you even if you’re a beginner, ramping up your skills from zero […]