The difference between American coffee machine and Italian coffee machine

Coffee machine is a general term for coffee brewing equipment. Brewed coffee to points, there are two kinds of American Italian, American coffee machine because of simple structure, easy to operate, more general family use. American coffee machine is usually divided into two layers, the use of ground coffee beans in advance will be equipped with filter paper or metal filter in the upper funnel-shaped container, the lower layer is made of glass or ceramic coffee pot, cold water poured into another separate compartment. When starting, the cold water is heated to about 90 degrees Celsius and gradually introduced into the funnel-shaped container, so that the hot water flows into the coffee pot below through the coffee powder. Espresso machines usually have a boiler to produce hot water, which is pressurized to about 9 atmospheres and then flows through the powdered coffee beans in the metal filter to brew coffee. The coffee brewed by this pressurized hot water is generally thicker and has emulsified fat, which is usually called espresso or espresso. There are many kinds of Italian coffee machines. Generally speaking, the most common one is a single boiler, and then there are double boilers, and there are multiple boilers. Of course, the price also becomes expensive. In addition to the general electronic control switch, there are also pull-type Italian coffee machines.