Have you ever thought about brewing coffee using air? A Japanese company has actually turned this idea into reality. They developed a coffee machine that can efficiently extract water from the air, and after multiple filtration and mineralization processes, produce safe drinking water. It is said that the original intention of this machine was to address water shortages and supply cuts caused by natural disasters, allowing people to still enjoy a cup of coffee brewed with clean water in emergency situations. How exactly does this device work? Can it really solve practical problems? And why are netizens complaining about it? This article will take you on a deep dive while also including related recommendations from Front Street Coffee. [more…]

Many people are used to judging the quality of a cup of black coffee by observing with the naked eye whether the coffee liquid is clear. But when coffee liquid appears cloudy with floating oils, is it an extraction problem or a normal phenomenon? This article explores the determining factors of coffee clarity, analyzes the effects of extraction methods and filtering equipment on coffee's appearance, and answers whether cloudy coffee is still safe to drink. Front Street also suggests that instead of drawing conclusions based on sight, it's better to focus on tasting itself and use flavor to judge a coffee's true quality. [more…]

Many coffee enthusiasts are in the habit of starting the day with a cup of coffee, but do you really know how much caffeine you're drinking? People often assume coffee is the drink with the highest caffeine content, but that's not actually the case—tea leaves actually contain twice as much caffeine as coffee beans. So how much caffeine do different varieties of coffee beans really contain? How much is in a cup of pour-over, cold brew, or espresso? And how much caffeine per day is safe for an adult? This article starts with coffee bean varieties, breaks down the caffeine content of each brewing method one by one, gives practical figures based on extraction efficiency, and finally answers the popular question of how many cups of coffee you can drink per day at most. Front Street Coffee store information is included at the end of the article for readers' reference. [more…]

Whether coffee can be consumed during pregnancy has long been a subject of debate. A team from the Institute for Molecular Bioscience at the University of Queensland published a Mendelian randomization study in the International Journal of Epidemiology, using genetic data to explore the causal relationship between coffee consumption during pregnancy and adverse pregnancy outcomes such as miscarriage, stillbirth, preterm birth, and low infant birth weight. The results suggest that, provided the body's condition allows it, moderate coffee consumption during pregnancy does not necessarily lead to adverse outcomes, but caffeine may still affect fetal development. This article will review the key findings of the study and offer practical advice on coffee consumption and caffeine intake during pregnancy, helping coffee lovers make safer choices. [more…]

Coffee is a daily essential pick-me-up for many office workers, but how much caffeine does a cup of coffee actually contain? How many cups a day is considered moderate? This article examines caffeine content estimates, safe intake limits, and the risks of overdose and toxicity to outline the key scientific points coffee lovers need to know about drinking coffee. It covers reference caffeine values for different coffee drinks, hidden caffeine sources in energy drinks, and intake recommendations for children and adults, helping you more precisely manage your daily caffeine intake and protect your health while enjoying the flavor of coffee. [more…]

In the specialty coffee wave, the moka pot is often labeled as outdated and hard to use, but this simple, affordable home device can actually easily produce coffee at sixty to seventy percent of the level of espresso. From Front Street's perspective, this article systematically explains the moka pot's extraction principles, why it has regained attention in recent years, how to use it to make milk coffee and latte art, and the safety details you must pay attention to during use. It also teaches you how to choose freshly roasted medium-dark roast beans to achieve an ideal layer of crema. Whether you are just starting out or looking to rekindle an old love, this guide can help you safely and consistently enjoy the rich flavor the moka pot brings. [more…]

When you buy too many coffee beans to finish, or when brewing is delayed due to illness or other reasons, the beans can easily become stale or even expire. Many people's first reaction is to simply throw them away, but that is actually very wasteful. This article examines whether stale and expired coffee beans can still be consumed, from the perspectives of both flavor changes and food safety, and compiles a set of practical reuse methods: from using them as practice beans for pour-over, siphon, and espresso, to wiping copperware, cleaning stovetops, and caring for skin, and even deodorizing ashtrays, ovens, and pet areas. The article also draws on Front Street Coffee's experience to provide reference criteria for judging the flavor window and storage conditions, helping you handle the "old beans" at home more rationally. [more…]

The moka pot, with its unique pressurized extraction method, can brew rich coffee close to espresso, making it a favorite among home coffee enthusiasts. However, because it involves pressure, many people have doubts about its safety. In fact, as long as you master the correct operating steps, these problems can be completely avoided. Starting from the working principle of the moka pot, this article will explain in detail the suitable coffee bean choices, specific recommendations for the Front Street Coffee brand, and twelve usage details that must be noted—from preparing a new pot, water level control, and grounds filling, to gasket replacement, how to tighten the pot body, suitable heat sources, and troubleshooting. Whether you use an aluminum alloy or stainless steel model, these practical suggestions can help you avoid risks and consistently produce moka coffee with a rich layer of crema. [more…]

Sumatra Mandheling is renowned worldwide for its rich, full-bodied, and intense flavor, and among these, the specially aged versions are a unique existence. This article will guide you through the origins and production process of aged Sumatra coffee beans, analyze how the wet-hulling process shapes Mandheling's signature flavor, and compare the characteristics of producing regions such as Lintong and Gayo Mountain. Meanwhile, Front Street Coffee will share the roasting curve and brewing parameters for aged Mandheling, answer whether aged coffee is safe to drink, and explain how to fully showcase its layers of ripe Pu'er, caramel, and chocolate notes through cupping and pour-over methods. Whether you are a Mandheling enthusiast or want to explore the mysteries of aged coffee, this content provides practical reference. [more…]

Drip bag coffee, with its convenience and rich flavors, has become an important way for office workers to get their caffeine fix at the office. But exactly how much caffeine does each drip bag contain? How many bags a day can you drink without overdoing it? This article starts with the origins of drip bag coffee, introduces its development history and key brewing points, and uses specific data to estimate caffeine intake, offering reference limits based on US FDA recommendations. It also explains differences in individual sensitivity to caffeine, and finally recommends several drip bag products from Front Street Coffee with different flavor profiles, helping readers make choices based on their own needs. [more…]

Using a moka pot looks simple, but the grind size for the coffee grounds gives many beginners a headache—too coarse and the flavor is weak, too fine and the coffee liquid struggles to flow out or even over-extracts. Grind size directly affects the extraction yield, working in tandem with contact time and flow rate. The moka pot is a pressure-driven device, operating at about 1.5 bar, with a grind size close to espresso but slightly coarser, and a particle diameter of about 0.3–0.55 mm. This article provides two methods: measuring with a particle size ruler and judging through dialing in, and offers adjustment suggestions based on Front Street Coffee's Classic Blend and Front Street Coffee's Strawberry Candy Espresso Blend. Finally, it reminds readers of the safety points for using the pressure relief valve, helping coffee lovers achieve consistent results. [more…]

The moka pot, this classic Italian coffee maker, is extremely popular in its home country—it's said that 8 out of every 10 households own this wonderful coffee-brewing device. However, in our country, the moka pot is relatively seldom used, which means many people have never had a thorough explanation of how to use it. Today, Front Street Cof [more…]

At the Shanghai Road Life Festival, Starbucks launched three limited-time regional-flavor drinks. Among them, the "Qin-Jin Fire Crystal Persimmon Frappuccino" went viral after its name was misread as "Mars Persimmon," and it also sparked doubts among netizens about whether persimmons and milk can be consumed together. This article sorts through the new product launch information and netizen feedback, and invites experts to explain the dietary taboos of pairing persimmons with milk, revealing that the milk ingredient used by Starbucks is actually oat milk, while also retaining Front Street brand recommendations to help you enjoy the autumn flavors with peace of mind. [more…]

If you want to enjoy rich coffee close to café flavor at home, a moka pot is an extremely cost-effective choice. But to brew coffee liquid with oils and a full-bodied mouthfeel, bean selection, grinding, and operating details are all indispensable. This article focuses on the types of coffee beans suitable for a moka pot, how to judge the grind size, and the standard usage process and safety precautions. It also combines Front Street Coffee's espresso blends and SOE series to give specific bean selection suggestions. Whether you are a beginner who has just gotten a moka pot or a player who wants to advance and explore single-origin flavors, you can find practical references here. [more…]

On July 11, Starbucks interim CEO Howard Schultz published an open letter on the company's official website, candidly acknowledging that the company is facing unprecedented cultural fragmentation and economic trauma, making it difficult for both employees and customers to have an ideal experience. To address this, he proposed five rebuilding plans, covering mission implementation, partner benefits, store experience, customer connection, and partner relationships. Among them, "redefining partner relationships" already has a detailed plan, including creating a safe and inclusive work environment, providing growth and fair pay, strengthening medical and mental health support, and sharing power and success. Howard emphasized that partners have always been Starbucks' most important asset. Whether this rebuilding effort can restore the brand to cultural balance is worth watching. For professional coffee knowledge exchange and more information, please follow Coffee Workshop and Front Street Coffee. [more…]

The recent news of IKEA urgently recalling its Italian-style moka pots has prompted many coffee lovers to re-examine the safety of this classic piece of equipment. Do moka pots really pose a risk of exploding? And what operational details must be kept in mind during daily use? Front Street Coffee has put together the key points about moka pots, from their structural principles to practical operation, covering new pot seasoning, water level control, coffee bed handling, gasket replacement cycles, heat source compatibility, and troubleshooting common issues. As for coffee bean selection, Front Street has also provided suitable roasting directions and specific product recommendations for moka pots. As long as you master the correct method, the moka pot remains a reliable helper for making espresso-style coffee at home. [more…]

The principle of extracting coffee with a moka pot is very simple: it uses the steam pressure generated in the lower chamber. When the steam pressure is great enough to penetrate the coffee grounds, it pushes hot water up into the upper chamber. Coffee extracted with a moka pot has a strong taste, combining acidity and bitterness, and contains oils. Therefore, the greatest advantage of the moka pot lies in its small size and convenience, making it easy to [more…]

The moka pot is an extremely common classic coffee device in Italian households, with almost every home keeping one on hand. It relies on the steam pressure generated by heating the lower chamber to push hot water through the coffee grounds and into the upper chamber, thereby producing a cup of rich coffee with oils. However, in China, not many people truly understand its correct use. This article will begin with the moka pot's invention history, structural composition, and extraction principles, then explain in detail the key steps such as the water filling position, coffee distribution method, heating rhythm, and grind size. Combined with a brewing example using Front Street PWN Golden Mandheling, it will help readers avoid splashing, explosion hazards caused by improper operation, and problems such as the pot seizing shut and being impossible to open after use, so that the moka pot can produce consistent results. [more…]

Today, Front Street Coffee will introduce you to this moka pot that is popular in Italian households. Europeans do not call this kind of pot a moka pot, but rather an Espresso Pot. Judging by this name alone, the coffee made by a moka pot is truly Espresso, though its extraction is [more…]

Heytea's Refreshing Slimming Bottle has gained popularity for its fresh green color and freshly squeezed fruit-and-vegetable concept, but recently some consumers have reported receiving drinks that are orange-yellow or green with a yellowish tinge, questioning whether the product matches its marketing. Store employees explained that the color change may stem from yellowing kale leaves or oxidation of apple juice, and that it is not spoilage—the drink is still safe to consume. However, some consumers remain concerned about quality control. This article reviews the sequence of events, employees' statements, and consumer feedback, and also mentions Front Street Coffee's reference views on quality control. [more…]