Would you like the coffee maker Italian or American? The principle and function difference between American Coffee Machine and Italian Coffee Machine

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There are many utensils for making coffee, including French filter kettle, wind kettle, hand brewing pot and all kinds of coffee machines. Mechanical coffee machines are mainly divided into two categories, one is American coffee machine, the other is Italian coffee machine.

The American coffee maker is relatively cheap because of its simple function. Most of the coffee pots sent by cards on the market, or coffee machines with a full price of about one thousand yuan from store promotions, are American-style coffee machines. The American coffee machine flushes out the original liquid of the coffee in the way of filtering, so it will be lighter in taste.

The structure of the Italian coffee machine is more complex, and its function is slightly better. It can make milk foam and even multiple types of coffee such as cappuccino.

The difference in principle between household American coffee machine and household Italian coffee machine

Italian coffee machine: high pressure extraction

Italian coffee machine usually has a boiler, the hot water will be pressurized, through the coffee powder trough, extract coffee, so it is also called pump coffee machine. The coffee brewed by this kind of high-pressure hot water is thick and has emulsified oil, which is often called espresso or espresso.

American coffee machine: atmospheric pressure extraction

It is usually divided into two layers, the upper layer is a funnel-shaped container with a filter paper or metal filter, and the lower layer is a glass or ceramic coffee pot. The American coffee machine also makes the hot water flow through the coffee powder into the lower coffee pot to extract the coffee, but the difference is that the hot water is at atmospheric pressure. In addition to cooking coffee, you can also make tea.

Contrast

1. American coffee machine, no pressure, only black coffee, that is, American coffee. You can't make any other fancy coffee.

2, Italian coffee machine, there is a certain pressure, you can use the pressure to make ESPRESSO coffee with quite thick coffee oil. Some plain espresso can be served with milk, lattes, milk bubbles, cappuccinos, and other fancy coffees.

3. Price: American coffee is generally less than one thousand yuan. The price of Italian coffee machine ranges from a few hundred yuan to more than one hundred thousand yuan.

The price of Italian coffee machine often costs tens of thousands of yuan or even to coffee chains on the market, professional equipment will cost hundreds of thousands of yuan. In the general small family is one of the main considerations of less purchase, Italian coffee machine is the way of high-temperature and high-pressure extraction to flush out the original coffee liquid, the taste is relatively strong.

American coffee machine

Advantages, easy to operate, large supply.

Disadvantages: long extraction time, easy excessive extraction, high caffeine, easy oxidation after cooking and storage for a long time.

Cooking method: put in filter paper-put in ground coffee powder-set the amount of water required-drip

The fineness of the American coffee machine powder needs to be adjusted, and the coffee dripping speed is slightly slower than the hot water flowing down the machine.

Italian coffee maker

Advantages: stable, steam supply, fast and continuous supply of coffee, low caffeine, coffee oil can be boiled.

Disadvantages, large volume, need special bean grinder, need professional soft water device, need professional training.

Cooking method: remove the handle of the filter cup-drop the powder from the bean grinder to the filter cup-fill the powder in the filter cup-hot water and pressure to cook

Italian coffee machine is also divided into manual, fully automatic and semi-automatic. In fact, I am a little worried about his classification, because when I bought it, the merchant said that the model I bought was semi-automatic, but I found that he needed to be controlled manually. In fact, in a fully manual machine, even the water pressure and temperature are manual. ).

In addition to buying a bean grinder, you also need to fill it with powder by yourself. after locking the grip of the filter, the amount of coffee extracted is set and stopped manually. If you are lazy and do not want to learn the truth of making coffee, you are advised to buy a fully automatic machine, which means that as long as you throw the coffee beans in, the coffee will come out. There is even a so-called capsule machine, as long as the purchase of their own special coffee capsules, you can easily drink coffee.

The above diagram can briefly describe the construction of a household espresso machine. However, the level distance between each brand and the machine will be different, such as pump, type of boiler, temperature, pressure control system and so on. When the early Italian coffee machine was invented, the reason why coffee didn't taste good was that the water temperature was too high. The reason is that because his pressure comes from steam, the water temperature must reach 100 degrees Celsius to make the coffee so-called scorched.

The boiler, the most important role is to heat hot water, most of the general household machines are single boilers. The high-end version has double boilers (one boiler specializes in making steam). Because there is a certain difference between the hot water temperature of brewing coffee and the steam temperature, so when the household Italian coffee machine is in use, it is necessary to wait for the steam boiling time of the hot water boiler or the steam to cool down to the hot water temperature of brewing coffee.

Because the purpose of the commercial machine is to meet the manufacturing quantity within a certain period of time, the compromise between the domestic machine and the time is also a consideration of time cost. The following picture shows the structure of the back of the machine. The red object connected to the pipe is the pump. The hose on the right is connected to the water tank, and the left is connected to the boiler.