High-quality coffee common sense to choose coffee beans or coffee powder

Many friends who are new to coffee are introduced through instant coffee. When they know more and more about coffee, when buying coffee online, they will inevitably encounter the problem of choosing coffee beans or coffee powder. The editor's suggestion is, of course, to choose roasted coffee beans, not coffee powder. Let's talk about why we choose coffee beans instead of coffee powder.

Usually when we smell the aroma of coffee powder, it shows that the essence of coffee is decreasing, and more and more essence and nutrients are being oxidized. If the diameter of the coffee powder is doubled, the volume of a single particle is reduced by 1 × 8, and the surface area of the corresponding total coffee powder is doubled. After the coffee bean is ground into coffee powder, its surface area increases exponentially, the area in contact with air increases hundreds of times, and the corresponding coffee oxidation process is faster.

Once the extremely important acidic and volatile fats in roasted coffee beans come into contact with the air, the chemical changes will occur and the taste will become worse. The esters and aldolases in the aromatic compounds of coffee are the most volatile, which will worsen the taste of coffee. Not only is the volatile loss of aromatic substances, the oxygen in the air will also oxidize aromatic components, especially the oxidation of fat, resulting in the smell of decay. Freshly ground coffee powder quickly absorbs moisture from the air, increases weight and reduces the effectiveness of extracting coffee ingredients, complicating matters under internal molecular pressure.

When we buy coffee powder, especially when shopping online, it usually takes about three days to receive the coffee powder, while a packet of coffee powder takes about three to five days to drink, depending on the individual's situation. we always recommend that coffee beans be ground into powder within three days, because the most essential flavor will be preserved in three days. In this way, the coffee powder we buy online is not so fresh, and it is difficult to taste the most primitive flavor of coffee.

Even when roasting coffee beans, the aroma of coffee is easy to give off, and coffee beans that are well preserved for more than a week or two after roasting are no longer fresh. Although it is very troublesome for many new coffee lovers to use the coffee grinder to grind the powder (the purchase skill of the coffee grinder) and then extract the coffee with the siphon pot (how to distinguish between the true and false HARIO siphon pot), in order to maximize the fun that coffee brings to us, we still suggest that the coffee friends can do it themselves and make a cup of coffee of their own mood, so we suggest that coffee beans should be ground fresh. Even now bake (how to bake coffee beans), store it in the refrigerator and drink it up in three days, so that we can taste the essence of the coffee, feel the mellow smell, and experience the cup of coffee that belongs to our own mood.