During roasting, it has a high temperature, causing the newly created aroma compounds to continue to evaporate, causing loss of flavor. Therefore, to feel the aroma of pure coffee, avoid aroma loss, the roasted coffee must be cooled as quickly as possible.
Changes in coffee cooling process
During the cooling of coffee, the aroma compounds formed continue to evaporate. On the other hand, due to the high temperature, the chemical reactions in the seeds continue to occur and especially the Caramel reaction and the Maillard reaction. So the coffee bean color becomes darker now. The faster it cools, the less the loss of incense will result in a clearer aroma of the coffee.
At first glance, this stage is not too important, but for a professional coffee roaster, they will take this stage very seriously. This is an artistic process to create the most special coffee cup, from smelling the aroma to looking at the chilled coffee beans, giving them an indescribable feeling that only people in the industry can feel. receive.
5. The stage of grinding coffee beans
Depending on the brewing method, coffee is ground in different sizes
Using a coffee grinder to make a puree is the final stage. The process of grinding roasted coffee beans has the main purpose of reducing the size of coffee beans and disrupting the inherent structure of roasted coffee beans in order to create favorable conditions for the preparation process when needed. At the same time, enabling some gases to escape during roasting out.
Use a coffee grinder to be selective, because grinding coffee beans is also important. It directly affects the quality of the finished coffee cup. If your coffee grinder is not good, the coffee beans are blended irregularly, affecting the preparation of coffee will face many difficulties as quality is not guaranteed.
Criteria of coffee grinding is that the coffee beans must be ground finely and evenly, generating heat at a minimum. Technically speaking, the technology cuts coffee beans into equal parts. Therefore, choosing a quality coffee grinder is essential. This also explains why there are coffee grinders that cost up to several thousand dollars in professional cafes.
High-end espresso machine will produce the best coffee
Using an espresso machine will bring you a great cup of coffee. Through the process of grinding coffee, the CO2, steam and volatiles will be released. The degree of ventilation depends on the size of the coffee bean after grinding. In the process of grinding reduces the aroma of coffee due to some substances being lost, so we need to use as soon as the coffee is ground to ensure the best quality. If not used, it should be stored in a sealed bag and avoid contact with air.
To have a clean cup of coffee (pure coffee) is not easy at all. Only the people in the profession can create finished products that meet the above criteria. Through the sharing on clean coffee, whether the cup of coffee you enjoy every day is guaranteed to be pure coffee, you have felt the true taste of the gift that the Creator bestowed?
These are just the basic sharing about clean coffee production and processing, in fact, roasting and grinding coffee in the world are much more complicated. For each different type of coffee you will have different ways of roasting and handling after roasting is also different. Or with each different type of coffee preparation, you also have to roast, grind coffee according to different profiles (an easy example is that roasting, grinding coffee to make coffee will be different from roasting, grinding coffee coffee to brew).
More delicious with 1 cup of pure coffee every day, you will find this life more wonderful!