Vacuum Brewing

Photograph by Kadluba

I'll be taking a different route and instead of introducing you to the method(s) of coffee grinding, I will be introducing another method of coffee brewing. What you see here is a vacuum brewer and takes the infusion process to a different, and very much unique level. Through this method, you may experience the cleanest, purest cup of coffee and I'll show you how through the steps required to utilize it.

Primarily, we have to know how it works. Vacuum brewers utilizes a process of suction -- the result of expanding/ contracting gases and in this case, the gas is water vapor. With it comes four parts, two glass containers, a tube that connects the two, and a filter that allows water/ gases through but keeps sediments, in this case, coffee out. Those two containers sit on top of one another, connected b that tube, and there's a filter in between. Of course, all of it is set on top of a stove or other heat source.

Step 1 requires the actual assembly. Step 2 follows by filling the bottom container with water and the upper container with coffee grinds.  Through the process of heating water, water vapor is formed and water vapor requires relief somewhere and the only relief is through the tube. So as the water heats up and vaporizes at the bottom, liquid from the surface is pushed up through tube and into the second container. At this point, the coffee grinds are undergoing their infusion process. 

Within 1-3 minutes, the process of vaporizing, expanding, transporting of liquids, infusing is over. Remove the entire assembly off from its heat source. At this point, the cooling temperatures affect the vapors and actually contracts the gas, bringing the liquids from the top back to the bottom -- through the tube and ultimately leaving all coffee grinds at the top and pure, clean coffee at the bottom. 

There you go! Though people used to the French press might find it weak since there's more filtration going on, they're always allowed to adjust the amount of coffee grinds.

Posted in: Coffee,Coffeemaker,Ken,Vacuum Brewer