Five common coffee extraction methods for coffee what is coffee extraction? What is coffee extraction?

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Front Street Coffee What is Coffee Extract?

Coffee extraction is about two things: what-"what is extracted (structure)"& how much-"density of extract (concentration)."

Structure: coffee flavor (sour/sweet/bitter) When coffee powder comes into contact with hot water to start extraction, the first thing to release is acidic substances (fruit acid flavor), followed by sweet, bitter, and finally over-extracted bad taste. The irregular morphology of coffee powder leads to the fact that not all particles are released 100% synchronously during the extraction process, so there is no absolutely uniform and identical extraction structure.

Concentration: Affects the coffee's intensity. Just like salt water or sugar water, the composition or flavor is the same, but the amount of dissolved substances directly affects the intensity of taste. Even if the structure of flavor substances is the same, different shades will result in different sensory experiences.

The concept of coffee extraction is that the flavor of coffee extract will change with the combination of "structure" and "concentration", so through the ratio of powder to water, water temperature, water injection speed, coffee powder thickness, etc., the extracted coffee can take on different appearances according to the barista's ideas.

drip

Filter paper drip type is the most typical brewing method, and it is also the most frequently used one in our home.

Extraction usage: very simple, as long as the filter paper on the coffee filter cup, brewing good after the filter paper in the residue can be dumped

Coffee thickness: medium powder

drip extraction

However, if you want to brew a cup of good coffee with stable quality, you also need to practice repeatedly. The other is flannel drip type. Although this method is a little more difficult, this brewing method still has C position in some coffee shops or coffee fans.

French pressure kettle

A French press is a cylindrical container and a metal screen with a shaft that separates coffee powder from water.

Usage: Pour the ground coffee into the coffee pot, add hot water, squeeze the filter after a while, and then filter the coffee from the bottom of the container. The operation method is also very simple.

Coffee thickness: coarse powder

French Pressure Pot Extraction

siphon type

Siphon coffee pot appearance is very special, when you brew coffee at the same time, as if in the laboratory to do the feeling of experiment, ceremony feeling is particularly strong.

Extraction usage: first pour water into a spherical glass container, then heat to boil, and at the same time put the coffee powder in a funnel and insert it into a glass container; when the water boils, it will be sucked up, then the coffee extraction will begin, after a certain time, as long as the heating is stopped, it will be filtered instantly, and the coffee liquid and powder will be separated.

Coffee thickness: medium powder

siphon extraction

espresso

Italian espresso has an important position in the hearts of coffee fans. High temperature and high pressure are the brewing characteristics of Italian espresso coffee, while mocha pots are regarded as home espresso machines by many coffee lovers.

How to extract: Pour finely ground coffee into a container and then make coffee in a short time at high temperature and pressure

Coffee thickness: very fine powder

mocha pot extract

coffee maker

Coffee machines are easier to operate, so they have a wider impact than drip coffee machines and are becoming more and more popular. However, because the coffee brewed by the machine has poor taste stability and is not as easy to control as hand-brewed coffee, the coffee raw materials brewed by the coffee machine are particularly important!