Curious minds

It was my birthday a few days ago, and I got some wonderful presents. However, one present invited scientific study: the custom designed and handmade Chemex Cozy created by Grandma Joy.

The Chemex is one of the world's great devices for brewing coffee. As the folks at Chemex explain: 

The Chemex Coffeemaker was invented in 1941 by Dr. Peter Schlumbohm PhD. Made simply from non-porous, borosilicate glass and fastened with a wood collar and tie, it brews coffee without imparting any flavors of its own. On permanent display at MOMA NY and other fine museums, it is truly a work of art.

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Few products in this century can match the flawless blending of design and function of the Chemex®. Its visual elegance has earned it a place in the permanent collection of New York's Corning Museum of Glass. The Chemex® coffeemaker was also selected by the Illinois Institute of Technology as one of the 100 best designed products of modern times.

Yes, except there is one flaw in its blend of design and function: it's thin uninsulated glass. Unless you pour the coffee into an insulated container, your fresh hot coffee won't stay hot long. I've tried wrapping the carafe in a towel, but that's an imperfect solution, and there don't seem to be any available products to keep the freshly brewed coffee warm.

Enter the GJoy coffee cozy.

The Chemex in its natural state
(Well, almost: it's empty)

Chemex, meet the GJoy cozy
Note the handsome fabric and Velcro closure

It's a wrap

It looks great -- handsome fabric, well made with clever touches like Velcro closures that make it easy to put on and take off and that ensure a snug fit.

But does it actually work? Will hot liquids stay warm longer? How much warmer and how much longer? Curious minds want to know....