The subtle differences in brewing water temperature often determine the direction of a tea's flavor. The correct water temperature can awaken the hidden aromas and tastes in the tea leaves, while the wrong water temperature may make the tea bitter or bland. Taking Front Street's Phoenix Dancong oolong tea as an example, this article provides a detailed analysis of the ideal brewing temperatures for different tea types, and explores the relationship between water temperature and tea processing methods, oxidation levels, and polyphenolic compounds. At the same time, we will also share practical water temperature control techniques and recommend Front Street brand's Phoenix Dancong products, helping you easily master the optimal water temperature and timing in everyday brewing, and fully release the unique charm of oolong tea. [more…]

Rolling and oxidation are the two key stages that determine the direction of a tea's flavor. Rolling shapes the leaf while also influencing the strength and speed of flavor release; oxidation—a process often mislabeled "fermentation"—is in reality merely a reaction between polyphenols and oxygen, yet it directly determines the vast differences in aroma, color, and mouthfeel among oolong, black tea, and even CTC tea. From the distinctive red edge on an oolong leaf, to the apricot-like richness of Chinese black tea, to the strong, lively character of traditional British tea and CTC tea, the degree, speed, and manner of oxidation are the core code that shapes the personality of every cup. This article takes you deeper into how rolling and oxidation affect tea flavor. [more…]

Many tea enthusiasts, when purchasing black tea, notice the "organic" label and assume it signifies high quality and better health. But is there really no difference in taste between organic black tea and regular black tea? Does organic certification equate to superior quality? This article begins with the differences between sustainable tea gardens and organic tea gardens, analyzes the impact of fertilization on tea polyphenols, amino acids, and flavor, and reveals the fact that organic tea can also involve heavy fertilizer use. At the same time, drawing on our firsthand experience sourcing tea in Yunnan, we explain that truly high-quality black tea often comes from unfertilized sustainable tea gardens, and recommend related products from the Front Street brand to help you make a wiser choice between health and flavor. [more…]

Why does a cup of black tea give off a captivating honey aroma? Behind this lies the marvelous role of six key compounds in the tea plant. Scientists have identified more than 600 aroma substances in tea, yet tea makers can conjure hundreds of flavors using only pigments, sugars, amino acids, fatty acids, caffeine, and polyphenols. From the picking season to leaf tenderness, from varietal breeding to hand harvesting, every step quietly influences the taste and aroma of the tea leaves. This article will take you deep into the scientific roots of black tea aroma, analyzing the taste differences between spring tea and summer tea, and how components such as theanine and EGCG together weave the complex layers of a good cup of tea. Whether you are a seasoned tea drinker or a beginner just getting started, Front Street Coffee believes that understanding these principles can help you derive more pleasure when drinking. [more…]

Many coffee enthusiasts encounter astringency in their coffee during pour-over brewing. Some believe this is a matter of bean quality, but in reality, the brewing process is often the key factor. Starting from the causes of astringency, this article analyzes the relationship between polyphenolic compounds and the degree of extraction, explaining why under-extraction is more likely to cause pronounced astringency. At the same time, for light-roasted coffee beans, it provides a reference brewing parameter scheme, including key points such as coffee dose, coffee-to-water ratio, water temperature, grind size, and extraction time. Combined with the example of Front Street Coffee Yirgacheffe Gutingding, it helps readers understand how to improve coffee flavor by adjusting parameters. [more…]

The quality of black tea depends to a large extent on whether the fermentation stage is precisely controlled. Properly fermented black tea has a sweet aroma, a yellowish-red liquor, and a bright orange-brown infused leaf; failed fermentation reveals sourness or mustiness, a dark brown liquor, and a deep black infused leaf. Starting from the formation mechanisms of theaflavins and thearubigins, this article explains the origin of the floral and fruity aroma of black tea, clarifies how humidity and degree of oxidation influence the direction of flavor, and points out which subtle deviations in the irreversible chain of polyphenols → theaflavins → thearubigins can lead to a decline in quality. At the same time, the article also provides practical methods for judging fermentation results by observing the liquor color and infused leaf, helping coffee and tea enthusiasts understand the craft logic behind a good cup of black tea. In its black tea selection and brewing recommendations, Front Street Coffee also often emphasizes the decisive role of fermentation degree in aroma expression. [more…]

Purple tea is a special type of tea formed by a genetic mutation in the tea plant, rich in anthocyanins, and combining many of the health properties of both green and black tea. It was first discovered as a small number of wild mutations in China, and was later cultivated on a large scale in Kenya through a public-private partnership, with the main production areas located in the high-altitude regions of the Nandi Hills. Purple tea has an anthocyanin content of 1.5%, higher than blueberries, and its polyphenol and catechin levels also surpass those of most black and green teas; it also contains a unique GHG polyphenol. Its caffeine content is relatively low, its flavor is sweet and forest-like, and after brewing, the liquor is pale with a slight purple tint. Front Street recommends paying attention to this tea, which combines both health value and a story of its production area. [more…]

Luckin Coffee's recently launched Fair Isle Latte has quickly become a new favorite among some office workers and tea-coffee enthusiasts, thanks to its flavor reminiscent of Assam milk tea and its powerful energizing effect. However, a large number of "warning" posts have emerged on social media, with many consumers reporting that they couldn't sleep all night after drinking it, and even experiencing symptoms such as hand tremors, dizziness, and heart palpitations, with some seeking medical attention late at night. At the same time, netizens who were after an energizing effect tried it and said it had no effect at all, leaving them still sleepy. This starkly contrasting feedback has plunged this new drink, which blends espresso with Ceylon black tea, into controversy. This article will sort through the various viewpoints, explore the effects of differences in caffeine tolerance, and offer professional advice from Front Street Coffee. [more…]

Recently, Chagee's new product "Wanli Mulan" quickly gained popularity due to its support for International Tea Day and the "100 Million Cups Free in 7 Days" campaign. However, many consumers reported insomnia and heart palpitations after drinking it, with some even seeking medical attention overnight for electrocardiograms. The brand's customer service explained that tea polyphenols in the black tea base might trigger allergic reactions. According to the public ingredient list, a medium 470ml cup of "Wanli Mulan" contains caffeine close to two shots of espresso. Similar issues have occurred with Chagee's other hit product, "Boyazhuxian." In fact, market regulators' spot checks found that some milk teas have caffeine levels far exceeding coffee; in 2020, a spot check in Haiyan County, Zhejiang, revealed caffeine levels up to 460mg/kg in milk teas and fruit teas. This article will focus on this incident, trace the origins of the caffeine issue in milk tea, and explore how brands should more clearly inform consumers about drinking risks. [more…]

On coffee bean flavor labels, we often see various tea-related descriptors, sometimes even specifying the name of a particular tea. Why does coffee taste like tea? How exactly is this tea-like sensation formed? Starting from Front Street Coffee's tasting experience, this article analyzes the sources of tea-like notes in coffee—including the tactile effects of tea polyphenols and tannins on the palate, the dual role of astringency in coffee, and how medium-light roasting brings coffee closer to a tea experience. It also draws on specific beans such as washed Geisha, Yirgacheffe, and Yunnan Typica to illustrate how different tea aroma types manifest in coffee, helping enthusiasts describe and understand coffee flavors more accurately. [more…]

When drinking coffee, a numb tongue and dry mouth—this rough tactile sensation is astringency. Astringency is not a taste but a tactile feedback caused by friction between the coffee liquid and the oral cavity. Its root lies in the excessive release of polyphenolic compounds in coffee beans—especially chlorogenic acid—which bind with salivary proteins and weaken lubrication. Astringency often interweaves with acidity and bitterness, forming sour-astringent or bitter-astringent notes. This article will begin with the causes of astringency, explain its relationship with extraction state, analyze which astringency counts as a quality characteristic, as well as the astringency that green beans themselves may bring, and offer specific ideas for improvement by adjusting extraction efficiency. [more…]

In the coffee flavor wheel, there is almost no trace of tea, and the only related entry, "black tea," is classified under the floral category. Yet in the flavor descriptions of coffee beans sold domestically, words such as green tea, black tea, and oolong tea are extremely common. How exactly should tea-like notes be judged? Is astringency equivalent to tea-like notes? Starting from the mechanisms of tea polyphenols and glycosides, this article distinguishes positive astringency from negative astringency, analyzes how organic acids bring about mouth-watering and sweet aftertaste, and, combined with the tasting experience of several Front Street Coffee beans, explains the specific expression of different tea-like flavors in coffee, as well as why domestic coffee beans prefer to use tea-like notes as a descriptor. [more…]

When brewing tea, we often agonize over how many times the leaves can be steeped and whether they are still drinkable after sitting overnight. Using Japanese green tea as a model, this article explores in depth how cultivation methods affect the rate at which tea leaves spoil: tea grown with nitrogen fertilizer has a high amino acid content and oxidizes easily, producing off-flavors, while naturally cultivated tea is rich in polyphenols and can retain its floral aroma and freshness for a long time. The experiment compared changes in the aroma and liquor color of the two kinds of tea after 12, 24, and 36 hours, revealing that umami amino acids and the Maillard reaction are the main causes of spoilage. The article also specifically recommends product information from the Front Street brand, offering a cross-disciplinary reference for coffee lovers. Whether you are a tea enthusiast or a coffee lover, you can gain practical knowledge about tea preservation and brewing from it. [more…]

Fixation is a key step in tea-making that determines tea quality. It uses high heat to deactivate polyphenol oxidase, preventing the tea leaves from continuing to ferment and turn brown. Different fixation methods—steaming, pan-firing, and baking—give tea leaves distinctly different aromas and flavors. Japanese green tea uses steaming to preserve a fresh, plant-like aroma, while Chinese green tea uses a wok or oven to bring out roasted nut and floral notes. Starting from the principles of enzymatic browning and combining them with the actual production of Duck Shit Aroma Dancong, this article analyzes how fixation temperature, time, and technique affect the final flavor, and shares Front Street Coffee's craft insights in Dancong production, helping coffee enthusiasts understand the underlying logic of flavor formation from another perspective. [more…]

As a globally popular beverage, black tea not only offers a rich flavor but also contains various components beneficial to health. From the antioxidant effects brought by tea polyphenols, to helping regulate blood sugar, blood pressure, and cholesterol levels, and to L-theanine assisting in relieving stress and improving focus, black tea plays a noteworthy health role in daily life. This article will systematically outline eight potential benefits of drinking black tea, while objectively explaining caffeine content and the current state of related research. Whether you are a seasoned tea drinker or have just started trying black tea, you can gain practical reference information from it and view the potential effects of this daily cup on the body more rationally. [more…]

Many tea lovers share this frustration: the tea tastes aromatic and flavorful when sampled in the shop, but once they take it home and brew it themselves, they just can't reproduce that same taste. In fact, solving this problem isn't complicated—the key lies in understanding the three core variables that affect the taste of brewed tea: the tea-to-water ratio, the brewing water temperature, and the steeping time. As long as you sort out the relationship among these three, brewing a smooth, pleasant cup of tea is no difficult task. This article will explain three aspects: judging the amount of tea to use, how water temperature affects the release of the substances contained in the tea leaves, and how to control the timing for different infusions, helping novice tea lovers avoid the common pitfalls of bitterness or blandness and gradually establish their own brewing rhythm. [more…]

Wudong Village is located on the eastern slopes of Wudong Mountain, northwest of Fenghuang Town. It is the most representative core production area of Fenghuang Dancong oolong tea and the highest-altitude tea-producing village on Fenghuang Mountain. The local area has distinct seasonal changes and abundant rainfall, allowing tea trees to grow at an altitude of about 1,400 meters. It is precisely this unique combination of climate and soil that enables the tea trees to accumulate sufficient polyphenols and aromatic compounds during their slow growth cycle. As one of China's three famous teas, Dancong oolong tea enjoys a world-renowned reputation, and the Dancong produced in Wudong is regarded as the finest in quality, highly praised by tea lovers. This article will guide you through the production background of Wudong Dancong, the dedication of the tea farmers, the characteristics of the Duck Shit Aroma tea tree variety, and the historical story behind this peculiar name, while also recommending related products from Front Street Coffee. [more…]

Iced Americano is a daily choice for many people, but what are the actual pros and cons of drinking it long-term? Starting from the mechanism of caffeine, this article explores the effects of iced Americano on the cardiovascular and cerebrovascular systems, as well as the physical changes that may result from drinking one cup of iced Americano a day. Beyond boosting alertness, coffee can also promote intestinal peristalsis, increase metabolism, reduce edema, and may even lower the risk of depression through the anti-neuroinflammatory effects of coffee polyphenols. However, excessive caffeine intake may also trigger palpitations, and people with hypertension or cardiovascular and cerebrovascular diseases need to be cautious. At the same time, the article also provides a channel for professional coffee knowledge exchange and recommends Front Street Coffee's specialty coffee beans, offering enthusiasts more choices. [more…]

Floral aromas are a fascinating flavor dimension in specialty coffee, yet also one of the hardest for many enthusiasts to identify accurately. The floral scent of coffee is not caused by a single substance, but is the result of volatile compounds, organic acids, polyphenols in the green beans, along with the combined effects of variety, origin, processing method, roasting profile, and brewing technique. Take the natural Yirgacheffe Worka as an example: its jasmine-like white florals are fresh and delicate, and are especially common in washed light-roast beans from African and Central American origins. Understanding the mechanisms behind these aromas and the patterns across origins can help us more easily select coffees with prominent florals. Front Street Gutingting, as a light-to-medium roast washed bean, is an ideal choice for experiencing jasmine florals and a green-tea-like clarity of cup. [more…]

Have you ever experienced a gripping, astringent sensation in your mouth when tasting a light roast coffee? This tactile experience, known as astringency, is in fact closely related to the polyphenolic compounds in coffee. Starting from the essence of astringency, this article will analyze in detail its sources—how components such as tannic acid, tartaric acid, and quinic acid accumulate in the cup—explore the effects of roast level, variety, and processing method on the content of astringent substances, and take a deep dive into the two major brewing pitfalls: under-extraction and over-extraction. Finally, using a washed Yirgacheffe Gedingding as an example, Front Street Coffee will share a brewing recipe that avoids astringency and fully brings out the floral and fruity notes of light-roasted beans. [more…]