The aromatic property of coffee has allowed people to use it in so many ways. It has helped people stimulate their senses and made conversations go for hours in cafeterias. And most of you are not eve aware that coffee has been taken to higher form of usage in clinics, not as a beverage, but as a substance for testing the olfactory nerve of patients.
Years back, people shed their sweat and blood before a cup of coffee can be produced. It involves a lot of processes, from roasting, to grounding and boiling. Then on the 19th and 20th century, people learned that it is pointless to roast the coffee beans because it produces the same delicious drink even if it’s just plain ground coffee.
The invention of modern coffee makers made life easy for anyone who considers himself a coffee addict. Coffee makers are home appliances used to brew coffee without the need to boil water in a separate container. Commonly, it undergoes the so-called automatic drip-brew process. The paper or metal filter inside its funnel is filled with coffee grounds, then it is set over a glass or coffee pot. In another chamber, cold water is boiled, and then directed into the funnel.
One type of coffee maker that became popular in the 19th century is called a vacuum brewer. It uses the vacuum principle to produce a clear brew. How does it work? Water is heated in the lower vessel until it expands to force the contents through a tube. This tube leads to the upper vessel that contains ground coffee. Once the lower vessel is empty, heat is removed. Vacuum then pulls back the brewed coffee and passes through a strainer in the lower chamber from where it is poured out.
Another coffee maker was introduced in the mid-19th century in the United States. Percolators are first filled with water and subjected to heat. When the water boils, water travels through a metal tube going into the coffee grounds. The same mechanism is done repeatedly until the coffee grounds run out of flavors.
Thermosiphon is another principle by which coffee makers are grounded. This specifically works for electric drip coffee makers or dripolators. From the water reservoir, water goes to the aluminum heating chamber. Thermosiphon effects in this chamber now pushes the water to go to a spray head, and then to the coffee grounds. From here, coffee brew is strained and then finally let out.
Coffee makers have been designed in different ways through the years. All these coffee makers made coffee experience incomparable from other beverages.
