Recently, due to the crazy discounts of Double Eleven, many friends have gathered to place orders online, and Front Street Coffee's Taobao Tmall customer service has therefore received more coffee-related questions than ever before. Questions related to grinding on demand, such as "how long can coffee beans last after being ground into powder" and "within how many days after grinding is it best to finish drinking it," are among the questions these friends have been consulting about recently. [more…]

Besides coffee beans, Front Street Coffee stores also sell drip bag coffee. However, drip bag coffee needs to be made on the spot, so if a customer wants to buy a pack of drip bag coffee at the store without a reservation, they usually have to wait about 10 minutes. So some customers will ask this question while waiting: "Lift the drip bag [more…]

Freshly ground coffee brews up more aromatic—this is already a well-worn topic, and we also know well how important freshness is to coffee flavor. But sometimes, to avoid hassle, many friends have the merchant grind the coffee beans into powder before shipping when buying beans, because then when it comes time to brew, there's no need to worry about what grind setting to use, nor [more…]

The aroma of coffee beans is not completely set the moment roasting ends. In the days after coming out of the roaster, the beans continue to slowly release carbon dioxide, and the floral, fruity, and sweet notes need a little time to recombine. The so-called peak-flavor window is more like a period when the flavor is relatively active, not a hard expiration date printed on the package. Once you understand this change, [more…]

Espresso relies on high pressure for rapid extraction. Freshly roasted coffee beans contain a significant amount of carbon dioxide internally. If they are ground and extracted before this gas has fully released, it tends to create coarse foam that interferes with the even penetration of water through the coffee bed. Understanding the degassing patterns of coffee beans can help us more confidently plan when to open [more…]

The sweetness and fruity aromas of honey-processed coffee beans often don't fully emerge on the day you open the bag. After roasting, the beans continue to slowly release carbon dioxide, and the aroma, acidity, and mouthfeel will recombine over time. When buying beans, besides looking at the origin and flavor notes, you should also pay attention to the roast date, the condition of the packaging, and your own drinking pace—these facto [more…]

Freshly roasted coffee beans are rich in carbon dioxide, and these gases are slowly released over time. Beans just out of the roaster are often in a phase of vigorous degassing, with a relatively high level of internal gas. If they are placed directly into a coffee machine for extraction at this point, the intense bubbling reaction can easily prevent the hot water from making full contact with the coffee grounds. As [more…]

After coffee beans leave the roaster, their aroma does not immediately reach its ideal state. The beans still contain a fair amount of carbon dioxide, so during brewing they degas vigorously, the water flow easily bypasses the coffee bed, and although the cup may have a powerful aroma, its sweetness and complexity have not yet unfolded. When choosing a blend, rather than simply assuming "the fresher the better," it is better to consider the roast date and the expected opening [more…]

For coffee beans with notes like nut, cocoa, and caramel, the appeal often lies not only in the roasting label, but also in the state they are in when you take that first sip. Drink the beans too early, and the aroma may be masked by the degassing process; leave them too long, and the originally round sweetness will gradually thin out. Only by mastering the rhythm from opening the bag to finishing the last cup can you more consistently [more…]

After coffee beans come out of the roaster, they continue to release carbon dioxide internally, and this degassing process directly determines whether the aromatic compounds can be extracted smoothly during brewing. Because blended beans and SOE differ in bean composition and roasting direction, their pace of reaching the optimal drinking state and the period for maintaining aroma each have their own characteristics. Single origin [more…]

Freshly roasted coffee beans accumulate a large amount of carbon dioxide gas inside, and this gas is slowly released over the following days. For espresso extraction, the state of gas release is directly related to the fineness of the crema and the overall expression of flavor. Understanding the internal changes in coffee beans at different stages can help us [more…]

Freshly roasted single-origin coffee beans hold a large amount of carbon dioxide gas trapped inside. In the first days after opening, this gas rushes out violently on contact with water, forming a dense layer of foam. Too much gas prevents water from fully contacting the coffee grounds, so aromatic compounds cannot dissolve out smoothly. Give the beans a quiet period to degas. [more…]

After coffee beans are roasted, they continuously release a large amount of carbon dioxide internally. Due to differences in the degree of heat exposure, dark roasts and medium-dark roasts naturally differ in their internal pore structure and degassing rate. This physiological change directly determines the crema condition during espresso extraction, and also defines the time window during which flavor development reaches a balanced state. [more…]

Roasted espresso coffee beans are in an active degassing phase, and paying attention to the roast date when choosing beans can help you plan your drinking rhythm. Freshly roasted coffee beans accumulate a large amount of carbon dioxide inside. If you extract immediately, the bubbles can easily interfere with the contact between the water flow and the coffee grounds, making the espresso's crema coarse and the flavor astringent. [more…]

The aromatic depth and smooth texture presented by a cup of latte are closely related to the current freshness and gas state of the coffee beans. After being heated during roasting, coffee beans continuously release carbon dioxide, and the flavor compounds inside are also constantly undergoing oxidation and transformation. Freshly roasted coffee beans, due to the high concentration of carbon dioxide within them, produce during extraction [more…]

After coffee beans expand from the heat in the roasting drum, their internal porous structure stores a large amount of carbon dioxide gas. Freshly roasted beans are in an active degassing phase; if water is poured in to brew at this point, the violently escaping bubbles will block even contact between the hot water and the coffee grounds, and the extracted flavor easily tastes green and muddled. [more…]

Coffee brewed with a moka pot has both an espresso-like intensity and retains some of the bean's aromatic variations. Freshness directly affects this intensity: if the beans are used too early, the cup may have a noticeable bubbly sensation and a harsh, sharp bite; if rested properly, flavors like nuts, cocoa, and caramel gradually meld into one another, making each sip smoother. [more…]

The flavor of a bag of pour-over beans changes over time. Freshly roasted coffee is usually full of gas, and its aroma hasn't fully opened up yet, so the brew may taste sharp, thin, or muddled. After resting for a while, the acidity, sweetness, floral and fruity notes, and lingering finish gradually come together, making each sip more complete. When selecting beans, the roast date is often [more…]

The appeal of coffees with notes of nuts, cocoa, and caramel often lies in their consistent sweetness, mild acidity, and smooth entry on the palate, making them suitable for hot Americanos, milk-based coffees, or moka pot brews. However, the same bag of beans, when drunk at different times after roasting, will vary in aroma, body, and finish. When choosing this type of coffee, besides looking at the flavor description, also pay attention to the roast [more…]

From the moment coffee beans finish roasting and leave the roaster, the aromatic compounds and carbon dioxide inside them begin a dynamic process of change. Machine extraction relies on a steady flow of water and pressure, and is especially sensitive to how filled with gas the inside of the beans is. Freshly roasted beans retain a large amount of carbon dioxide inside, so if they are placed directly into the machine for extraction [more…]