Coffee Maker and Their Evolution into Different Types
Coffee is one of the most aromatic substances that humans ever discovered. In clinical areas, it is often used to test the sense of smell of neurologically impaired patients. In offices and homes, it is used to awaken the senses and keep you on the go. In cafeterias, it is often used for relaxation and making conversations. No matter what purpose coffee has for you, it is quite clear that coffee is already part of everyone’s lifestyle.
Many years ago, a cup of coffee was never easy to make. Coffee beans were being roasted then grounded, placed in a hot pot, and boiled under water. During the 19th to 20th century, people learned that roasting coffee beans was not really necessary, and that adding ground coffee to boiling water was enough to make a delicious drink.
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.
In the mid-19th century, percolators were developed in the United States. In this coffee maker, heat is applied in a boiling pot with removable lid. When water reaches its boiling point, it is forced through a metal tube that leads into a brew basket with ground coffee. The process is repeated until all coffee flavors are extracted.
Electric drip coffee makers or dripolators are another type of coffee brewing device that uses the principle called thermosiphon. In this type, there is a reservoir for cold water. Water from this reservoir goes into a flexible hose that leads to an aluminum heating chamber. This chamber moves the heated water into another hose by way of thermally-induced pressure and siphoning effect. From this hose, water goes to a spray head, and then to the ground coffee. Coffee then passes through a filter, and then poured out.
Coffee makers have been designed in different ways through the years. All these coffee makers made coffee experience incomparable from other beverages.
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