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!)
Why we secretly love our cords. Tamara Warren: There’s a certain security in the cord. It’s the idea of connection, perhaps even dating back to our days in the womb. … A battery, no matter how sophisticated, is fleeting. When we have our cords with us, we are in constant pursuit of power, even when […]
The classic beatbox – not an expensive clone or a collection of cleverly-tweaked samples – is back. Roland’s TR-08 directly models the original machine’s analog circuits to recreate its sound as accurately as possible with modern digital technology, and joins revived versions of the TR-909[Amazon] and TB-202[Amazon] in the company’s lineup of boutique boxes. The […]
Coming after improvements to Firefox and continued unease at Google’s life-pervading insight, this image is outperforming the ███████ ████ Virality Control Group today (via). It got me thinking about all the promises that were made. Here’s the earliest article in Google News to contain “Big browser” in its headline, published by Time Magazine on Nov. […]
The Pry.Me Bottle Opener holds tens of thousands of times its own weight, and you can pick one up now from the Boing Boing Store.This remarkable keychain is considerably smaller than any of your keys, but don’t let that fool you: it can easily open any bottle, and could even tow a trailer full of […]
Guaranteeing your privacy online goes way beyond checking the “Do Not Track” option in your browser’s settings. To ensure that your internet activity is totally hidden from Internet Service Providers, advertisers, and other prying eyes, take a look at Windscribe’s VPN protection. It usually costs $7.50 per month, but you can get a 3-year subscription […]
This project management bundle will help you get organized and learn how to lead a team to success. You can pay what you want for these five courses when you pick them up from the Boing Boing Store.To help you become an invaluable asset for your company, this bundle includes a curated collection of professional […]