Innovation Under $50
Big ideas come with small price tags.
How a "magnetic tornado" makes cold brew coffee in minutes
Published
Traditional cold-brew coffee methods take anywhere from 12 to 24 hours of steeping. The Rapid Cold Brew Coffee Maker gets the same flavor in a fraction of the time. The secret is in the vortex.
A stirring discovery
Any chemists out there? You’ll know the magnetic stirrers commonly used in laboratories. The way it works is, you drop a magnetic stir bar or “flea” in your container of liquid. You set the container on the magnetic stirring unit and turn it on. Inside the base of the machine, either a rotating magnet or an array of electromagnets get the stir bar spinning.
Once the stir bar really gets going, it creates a powerful whirlpool that quickly combines the mixture in the container. The vortex at the center takes on that classic tornado shape, with the tip touching down on the stir bar.
Scientists like magnetic stirrers because they stir much faster and more thoroughly than any human could stir, and are much less prone to friction and breakdown than any mechanical stirrer. Scientists are smart.
Don’t mess with vortexes
The Rapid Cold Brew Coffee Maker also creates its own “tornado” using high-velocity magnetic rotation. In this case, the role of the stir bar is played by an affixed part of the stirring cup, but the principle is the same. Magnets in the base spin the stirring element so the water can quickly extract the flavor from the coffee.
So quickly, in fact, that in just 10 minutes you can have cold brew as strong as after 12 hours of conventional steeping. Like more of a kick? A 24-hour-strength cold brew can be yours in just 30 minutes.
Whatever your poison, the Rapid Cold Brew Coffee Maker harnesses the power of magnets to satisfy your cold-brew cravings. You’re not paying cafe prices, so feel free to experiment with different drinks and infusions. In the name of science, of course.
