Multiple factors affecting a cup of coffee (Espresso)

On the basis of affecting the quality of coffee, we divide the production process into several elements to facilitate the organization of a large number of materials, not to say that these elements are independent of each other or can be defined separately. For example, there are many small factors that affect the pump pressure, we just assume that they are all normal, the valves in the machine are well sealed, and the outlet head seal ring is soft and tough, ensuring good sealing performance. We also assume that the pump is working properly, and so on, in practice, everything changes at different times.

Therefore, instead of fixing our understanding on the elements we divide, we can reorganize the elements to establish your own espresso production process. In the practice of making espresso, when several factors have problems at the same time, it is difficult to separate a certain factor, and different factors cross and influence each other. There are thousands of possibilities for making mistakes, and only one combination can get the best results. To get a good espresso, you have to think about not only one factor, but also all the other factors and how they relate. Here are some of the most common factors that affect espresso:

1. Environmental factors: temperature, humidity, light

2. Raw material factors: cleanliness and mineral composition of water, freshness of coffee, roasting and formula of espresso beans

3. Equipment factors: espresso grinder, espresso machine, pump pressure, water temperature, cleanliness

4. Production technology: coffee powder filling tools and skills, extraction time, extraction amount of espresso, grinding degree.