Ultrasonic Absinthe Mist Cocktail

It must be ultrasonic month here at Seattle Food Geek headquarters, ‘cause I’ve got another high-frequency food hack.  I recently bought an ultrasonic mist generator to use as a humidifier for a meat curing chamber I’m working on.  These little devices emit ultrasonic waves (around 20KHz) which cause the surrounding water to cavitate into a very fine mist without raising the water temperature.  Since the mist is so fine (about 1 micron) and is instantaneous and low-temperature, I thought it might be a great way to disperse aromatics around a food or beverage.  I ran a few experiments to see if it would turn alcohol into mist, but unfortunately most of the results were very poor. 

Rum did bupkis.  Whiskey gin were the same.  Dry vermouth produced a small amount of mist, and absinthe on it’s own produced a decent fog.  However, since Absinthe is meant to be consumed with added water anyway, the cocktail you see above was the best result I achieved in my limited testing.  From what little I can gather, I think the mist generator relies on a relationship between the frequency of the emitted ultrasonic wave and the speed with which sound travels through water in order to produce the mist.  Sound waves will move at different speeds in liquids with different densities, so perhaps tweaking frequency of the transducer would allow me to directly mist other liquids.  Just a theory. 

The mist generator has a ring of garish, color-changing LED lights built in – this is not part of the intended effect.  However, the mist produced above the drink does add something nice to the act of drinking it; the aromatics of the absinthe are amplified by becoming airborne, so you get a pleasant hit of anise aroma before you make contact with the drink.  I think there’s potential to this technique, but until I can make mists out of whatever liquid I want, and without having to submerge a plastic doodad in your cocktail, I’ll consider this to be a “promising prototype.”

Video: DIY Cotton Candy Machine from a Blender and a Tin Can

Do try this at home, but don’t burn your house down!

This turned out to be one of the more dangerous machines I’ve ever built.  The goal was to make a cotton candy machine out of parts I had lying around.  The finished product was an aggressive, 1/2 horsepower, 4000°F beast of a machine that lasted long enough to prove itself before dying of awesomeness. 

If you want to build a cotton candy machine at home, all you need is:

  • A tin can, like a tuna or dog food can
  • A drill with a very small drill bit
  • A motor (ex, your drill, an old CD player, a blender)
  • A heat source, such as a propane torch, a lighter, or the coils from an old toaster
  • A bucket to catch the cotton candy, or alternately a sheet of paper to wrap around the assembly
  • Sugar

Follow the steps in the video to see just how easy this machine is to build.  Oh, and don’t forget… safety first.  My favorite part of this project was setting up a blast shield in front of the camera before we turned on the machine.

cotton candy build
Special thanks to Victor (@sphing) for filming!

Top Food Geek Christmas Gifts of 2010

food geek christmas gifts
The season of giving is upon us, and that means it’s time to start Christmas shopping for the food geek in your life.  Let’s face it: he (or she… but who are we kidding, it’s a he) is hard to shop for.  He already owns 4 kinds of microplanes, he’s got more cookbooks than Barnes & Noble, and his spice rack is organized by atomic weight.  A waffle iron just isn’t gonna cut it this year.

For just that reason, I’ve rounded up the best and geekiest kitchen gifts of 2010.  And, if you’re feeling extra generous, I also threw in a few “luxury items” sure to induce a Christmas morning nerdgasm.

 

Books

2010 was a great year for cookbooks.  In fact, all of the books below are new this year, with the exception of Modernist Cuisine, which is available for preorder but won’t ship until March.  At $475, it’s not exactly a stocking stuffer, but you can spread out the joy by wrapping each of the five volumes separately. 

Modernist Cooking “Ingredients”

If the food geek on your Christmas list is dying to pull off the latest techniques, he’ll need some ingredients.  I’ve found the WillPowder brand to be a great value for the price.

 

Essential Kitchen Gear

Who doesn’t like playing with new toys?  Over the last year, prices of induction cooktops have plummeted.  They are a great way to expand your stovetop capacity, and they’re extremely energy efficient for heating small quantities of food. 

 

In My Dreams…

Some guys dream of sports cars, some guys dream of rotor/stater homogenizers.  Here is the equipment in the kitchen of my dreams.