Monday, September 21 2026

Rust Spots Found in Starbucks Stainless Steel Insulated Tumbler's Interior Spark Quality Controversy, Drawing Attention to Consumer After-Sales Rights Protection

It is no longer news that chain coffee brands sell merchandise. Products such as cups, pins, and canvas bags can not only increase revenue but also cultivate fan loyalty. However, once merchandise has quality problems, after-sales disputes follow one after another. Recently, a netizen posted that the bottom of the inner liner of a stainless steel insulated cup they bought from Starbucks had black rust spots, and when they asked the official side for a replacement, they were refused on the grounds that it was "beyond the after-sales time limit." The post resonated with a large number of consumers. Some complained that quality control was worrying, while others believed that the way it was used might be the key. Three days after the incident gained traction, the blogger updated the progress, saying that Starbucks had agreed to replace it. Who is actually responsible in this dispute? And how should brands balance the appearance and quality of merchandise? [more…]

Luckin Coffee Teams Up with Honor of Kings to Launch Ten Co-branded Themed Cups, Store Employees Say the Pressure to Identify Them Is Intense

Luckin Coffee's collaborative campaign with the hit mobile game Honor of Kings has officially launched, coinciding with the game's tenth anniversary celebration and drawing widespread attention from players. The collaboration features a special drink inspired by in-game equipment called "Pain Mask · Tamarind Americano," along with merchandise such as hand fans, insulated tumblers, and gold-stamped badges. During the campaign, stores nationwide are using a three-piece collaboration set consisting of takeaway cups, cup sleeves, and paper bags, with the most eye-catching item being as many as 10 themed cup designs covering 5 game characters. The rich variety has thrilled players but placed a double burden on store staff in terms of identification and stocking. Front Street Coffee continues to follow developments in the coffee industry and brings you frontline observations. [more…]

Manner's new cup campaign officially announced: buy a 75 yuan set to get a straw cup, three extra-large hot drinks spark heated discussion among netizens

Manner Coffee has always been a "cup powerhouse" in the coffee world, but its previous travel mug drew heavy criticism for its looks and quality control. Recently, the company finally teased a new cup, and its stylish design has netizens eagerly anticipating it. However, the activity rules officially announced this morning have sparked huge controversy: starting November 8, customers must buy a designated 75-yuan set meal in-store to get a randomly colored stainless steel straw cup, and all three drinks in the set must be extra-large hot beverages. Many netizens said outright that "three cups is too much to finish" and "hot drinks are too cloying," arguing the threshold for the promotion is too high. Manner has long attracted customers with its "bring your own cup and get five yuan off" campaign. Can this new cup marketing win back its reputation? Let's keep watching. [more…]

Thailand Seizes Ten Thousand Counterfeit Starbucks Cups and Mugs; Police Bust Cross-Border Fake Goods Network

Online shopping is becoming increasingly popular, but the problem of counterfeit goods has followed close behind. Recently, Thai police busted a cross-border counterfeit-selling case, seizing over ten thousand fake Starbucks coffee cups and insulated tumblers, with the amount involved reaching as high as 5 million Thai baht. The gang purchased the fake goods from China and then sold them to various places through well-known online shopping platforms. This article will walk you through the details of the case and the relevant legal consequences, and remind consumers to be on guard against counterfeit products. At the same time, Front Street Coffee also reminds you to follow coffee knowledge exchanges and get more professional information. [more…]

How Much Aroma Can a Thermos Preserve When Storing Pour-Over Coffee? A 6-Hour Flavor Change Test of Yirgacheffe

As temperatures drop, pour-over coffee quickly goes cold. Front Street Coffee conducted an experiment using a washed Yirgacheffe Gedingding, pouring freshly brewed coffee into a 316 stainless steel thermos and sealing it, then measuring the temperature and tasting the flavor hour by hour. At 1 hour, 65.8°C, it still retained floral and citrus notes; at 2 hours, 60°C, there was almost no change; at 3 hours, 54°C, the flavor was slightly weaker; at 4 hours, 50°C, the floral notes had dissipated and the acidity and sweetness became more prominent; at 5 hours, 46°C, only honey green tea and citrus acidity remained. The test shows that a qualified thermos can preserve the flavor well for 2-3 hours, making it suitable for taking to work, but after 4-5 hours the drop in temperature makes it prone to bacterial growth, so long-term storage is not recommended. [more…]

Starbucks Tumbler Production Process Raises Environmental Concerns, Greenwashing Controversy and Lid Plastic Issues Draw Attention Again

Starbucks has long presented itself as environmentally friendly, from coffee-ground straws to the global expansion of its "Greener Stores," earning recognition from many environmentalists. However, a recent TikTok video showed a barista first making a drink in a disposable plastic cup before pouring it into a customer's own glass cup and then throwing the plastic cup away, sparking accusations of "greenwashing." In fact, this is not the first time Starbucks has been questioned over its environmental measures: the strawless lids introduced in 2018 were criticized for using more plastic, and the deposit and recycling issues surrounding reusable cups have also been highly controversial. This article will outline the course of the incident and the responses from various parties, and review the many controversies in Starbucks' environmental marketing, to help you understand the true situation of this coffee giant on the road to sustainable development. [more…]

Starbucks Upgrades Its Environmental Practices Again: Discarded Reusable Cups Recycled into Coasters, Coffee Grounds Turned into Straws and Cakes

As the world's largest coffee chain brand, Starbucks consumes an astonishing amount of materials in its daily operations, with plastic products being a significant component. In recent years, Starbucks has continued its transformation into an environmentally friendly brand, constantly introducing new initiatives in resource recycling. Starbucks Japan recycles discarded tumblers into coasters, while coffee grounds are used for composting to grow carrots and make cakes for sale; Starbucks China processes coffee grounds into cold drink straws. Additionally, Starbucks is accelerating the opening of "Green Workshop" stores, using discarded items from other stores for creative upcycling. These practices not only reduce carbon emissions but also demonstrate to consumers more possibilities for waste recycling, offering considerable inspiration to the coffee industry. [more…]

Manner's Bring-Your-Own-Cup Policy Sparks Controversy: Whether Plastic Bubble Tea Cups Qualify for Discount Becomes the Focus

Manner Coffee's bring-your-own-cup discount has always been a highlight attracting consumers, and many customers, in order to save 5 yuan, are used to bringing their own cups to buy coffee every day. However, recently a customer was refused by a barista when using a Nai Xue limited-edition milk tea cup, while on social media someone succeeded in buying with the same type of cup, raising questions about inconsistent enforcement standards across Manner stores. At the same time, whether plastic takeaway cups can be used as bring-your-own cups has also become a hot topic of discussion. This article will sort through the course of events, the differences in plastic materials, and the views of various parties, and bring related recommendations from the Front Street brand. [more…]

Luckin Coffee's Tom and Jerry collaboration face-changing pen criticized for poor quality control, pattern wear issues spark consumer dissatisfaction

Luckin Coffee has teamed up with the classic animated IP Tom and Jerry for the third time to launch a New Zealand raw cheese latte and a series of limited-edition merchandise, among which the face-changing pen quickly captured the hearts of a large number of consumers with its fun design of pressing to change faces. However, many buyers found in actual use that after pressing this face-changing pen several times, the printed pattern of the character's face inside the pen barrel window began to peel, become mottled, or even disappear, and quality control issues then surfaced. Consumers' photos and complaints appeared one after another on social platforms. Some tried to exchange the product at stores but found the problem persisted, while others took apart the pen and applied film in an attempt to extend the life of the pattern. This article will review the complete process of this face-changing pen from going viral to flopping, present consumer feedback and coping methods, and focus on the quality control controversy surrounding Luckin's co-branded merchandise. [more…]

Starbucks Teams Up with Peanuts to Launch Snoopy Collaboration Series, 23 Items Spanning Practicality and Collectibility

Starbucks has launched a dream collaboration with the classic comic strip Peanuts, unveiling a Snoopy-themed merchandise collection in Japan under the theme "HAPPINESS IS CONNECTING TOGETHER." The collaboration features a total of 23 items, released in two waves on September 28 and October 5, spanning categories such as thermos bottles, tumblers, mugs, T-shirts, baseball caps, tote bags, blankets, and gift cards, with prices ranging from 2,550 to 4,900 yen. The most anticipated item is a Snoopy plush wearing a Starbucks apron, available in both keychain and figurine versions, which goes on sale only on October 5. This collaboration not only pays tribute to the timeless, multi-generational appeal of Peanuts but also echoes Starbucks' "third place" philosophy of happiness. [more…]

Nongfu Spring's Hit Milk Tea Returns: Jasmine, Black Tea, and Oolong Launch Together—Can 0-Added Milk Powder Shake Up the Hundred-Billion Ready-to-Drink Milk Tea Market?

After eight years, Nongfu Spring is once again making a push into the bottled milk tea sector. On October 12, its official WeChat account posted an article announcing a renewed layout for the "Da Milk Tea" series, launching jasmine, black tea, and oolong flavors, with a net content of 380 milliliters, highlighting selling points such as "0 added milk powder," "0 added tea powder," and "0 added flavorings." It is reported that this series uses concentrated milk and carefully selected whole-leaf extraction, with cold-chain storage and transportation throughout, and the JD.com presale price is 135 yuan for 15 bottles. Looking back to the end of 2013, Nongfu Spring had launched a matcha-flavored Da Milk Tea in a tumbler-shaped bottle, which faded out after a lukewarm market response. Now, bottled ready-to-drink milk tea is regarded as a new outlet, and in the hundred-billion milk tea market, street drinks, brewed drinks, and ready-to-drink drinks each occupy a share, with new brands such as Genki Forest and Hankou Erchang also entering the fray. Front Street Coffee believes that whether Nongfu Spring can win consumers' favor this time remains to be tested by the market. [more…]

Manner's seventh-anniversary delivery free-cup promotion triggered a surge in orders, forcing intermittent closures at stores in multiple locations—what does this say about the success or failure of its online marketing strategy?

Manner Coffee's seventh-anniversary celebration introduced a limited-edition grab-and-go cup giveaway with takeout orders. The intent was to boost online orders, but it unexpectedly triggered order surges at multiple stores nationwide, supply chain breakdowns, and even intermittent closures. Consumers flooded social media, with some sharing receipts to score freebies and others complaining about orders being canceled without explanation, delivery fees soaring, and stores shutting down outright. This marketing campaign, seemingly full of complaints, actually reveals Manner's ambition to push into the takeout market. From its brick-and-mortar beginnings to aggressive online expansion, the capacity bottlenecks brought by rapid store expansion and semi-automatic equipment are now emerging. This article will sort through the sequence of events and retain relevant recommendations for Front Street Coffee. [more…]

Manner's winter foil insulation packaging returns, customers touched while staff under pressure

As the cold season arrives, Manner Coffee has once again introduced foil packaging to keep takeaway hot drinks warm, a move that has sparked widespread discussion on social media. Many customers are touched by the brand's thoughtful detail, believing that the foil effectively maintains the drink's temperature and improves the takeaway experience. However, store employees face extra work pressure, especially during peak ordering periods, when packing efficiency is affected. This article reviews the history of Manner's foil packaging, analyzes the different perspectives of customers and employees, and explores whether there are better insulation solutions. [more…]

Three Common Pitfalls in Keeping Hot Coffee Warm: Misconceptions About Heaters, Microwaves, and Insulated French Presses

Many people prefer to finish their coffee while it is still steaming, because the aroma is at its most vibrant when the temperature is high. But once they cannot finish it, some choose to keep reheating it or repeatedly warming the cup, unaware that if these methods are done improperly, they can instead cause the coffee to lose its aroma, make the taste bland, and even bring out a burnt, bitter flavor. This article sorts out the three most common mistakes people make when keeping hot coffee warm in daily life—using a heater to keep it warm continuously, putting it in the microwave to heat it, and storing coffee in an insulated French press—and explains one by one their specific effects on flavor. At the same time, it offers a simple and reliable alternative: switch to a thermos and rely on the coffee's own temperature to maintain its heat. At the end, it also includes Front Street Coffee's reminder about re-brewing coffee grounds, to help you enjoy a good cup of coffee more completely. [more…]

Manner's foil-wrapped hot coffee for insulation goes viral: thoughtful detail or excessive packaging?

When the December cold wind picks up, friends who order hot coffee delivery start worrying again: by the time it arrives, it's often just lukewarm, and drinking it is really not comforting enough. To preserve that warm sip, coffee shops are pulling out all the stops. Recently, netizens noticed that Manner's baristas wrap each hot delivery cup in shiny silver foil, as if adding a winter coat to the cup—a sight that is both surprising and a bit amusing. Some joked that spending ten yuan on a coffee actually gave them the feeling of being cherished. Is this layer of foil just for show, or can it really lock in the heat? Consumer feedback is almost unanimously one-sided: when peeling off the foil, the contents are shockingly hot, so much so that you have to turn on a fan to cool it down. In fact, this is not Manner's first year trying it out; it was already implemented last year. Behind heat preservation lies a common drinking principle: as temperature drops, acidity and bitterness become more pronounced. Is Manner's move just formalism or a scientific plus? Front Street is here to take you on a deep dive. [more…]

What temperature should you set for pour-over coffee in winter? Changes in slurry temperature and practical insulation tips

After the weather turns cold, many coffee enthusiasts find that using the same brewing parameters makes their coffee taste weak and lacking in sweetness. The problem often lies in the water temperature—a low-temperature environment accelerates heat loss, causing the actual extraction temperature to be lower than expected. Through actual testing, Front Street has found that at the same initial water temperature, there is a clear difference in the temperature of the coffee bed between summer and winter. This article will analyze the gap between the water temperature in the kettle and the extraction temperature, provide specific recommendations for adjusting water temperature in winter, and share practical techniques to reduce heat loss, helping you consistently produce a cup of pour-over coffee with full flavor even in the cold season. [more…]

The Art of Detail in Coffee Takeout Packaging: The Complete Design Logic from Leak-Proof Venting to Heat-Preserving Compartmentalization

Takeout coffee has become an important part of daily consumption. From the moment a store hands off an order to the moment a rider delivers it, packaging design directly determines whether the cup of coffee the customer receives is intact, whether the temperature is right, and whether the taste is as good as it was fresh. Behind a cup of takeout coffee lies a series of detailed considerations: vent holes, leak-proof paper, foil insulation, separate packing and bagging, and even rain bags and custom packing boxes. These seemingly inconspicuous packaging steps not only affect order efficiency and the consumer experience, but also serve to spread word of mouth for the brand. This article will break down, one by one, the often-overlooked tricks of the trade in coffee takeout packaging, and look at how merchants strike a balance between preventing spills, keeping coffee warm, and preserving taste. [more…]

Grandpa Doesn't Brew Tea Limited Edition Insulated Cup Inner Liner Rusts; Official Recall Initiated After Testing, Cause Announced

The chain milk tea brand Grandpa's Tea launched a limited-edition garden thermos to celebrate its sixth anniversary, attracting many fans to collect the merchandise. However, some consumers discovered rust at the rim of the cup along with a strange odor after use, raising concerns about product quality. Multiple users posted about similar issues on social media, yet the after-sales handling failed to satisfy consumers. After media reports on October 22, the brand took the matter seriously, sent the product for testing, and released preliminary investigation results confirming that the metal inner liner was indeed 316 stainless steel, and that the rust was caused by the manufacturing process, after which it immediately initiated a recall of the affected batch of thermoses. Front Street Coffee reminds coffee lovers that when choosing a thermos, they should pay attention to material and craftsmanship details, and promptly defend their rights if they encounter quality issues. [more…]

A Little Tea's takeout bags are in short supply, and customers receiving their orders in garbage bag packaging has sparked widespread discussion.

Recently, some consumers reported that when buying a cup of Yidiandian milk tea at a store, staff actually packed the drinks in thin transparent plastic bags or even black garbage bags, sparking heated discussion online. Behind this is not stinginess on the part of the store, but the fact that the paper bags promised by headquarters as replacements had still not arrived, leaving some stores in the awkward situation of "having no bags to use." Employees revealed that before the Chinese New Year, headquarters notified them that plastic bags would be replaced with paper bags, but there has still been no sign of them, and they were instead told they would have to wait until April. During this period, they went through the Chinese New Year and Valentine's Day consumption peaks, and many stores saw their packing bag inventories run critically low. At a time when many chain brands are launching co-branded paper bags, Yidiandian's insistence on plastic bag packaging has also sparked polarized discussion among fans. This article will walk you through the whole incident and the reactions from all sides. [more…]

How to Choose the Water Temperature for Pour-Over Coffee? A Full Analysis of Suitable Temperatures for Light and Dark Roasts and Insulation Details

When brewing pour-over coffee, even if the water quality, technique, and timing are all normal, under-extraction can still occur, and the problem often lies with the water temperature. Beans of different roast levels have different water temperature requirements: light-roasted beans are dense and need higher water temperatures, while dark-roasted beans have a loose structure and are better suited to lower water temperatures. Front Street Coffee typically uses 91~93°C for light-roasted beans and 86~89°C for dark-roasted beans, making fine adjustments based on the condition of the beans and the grind size. In addition, details such as the pouring height and whether the kettle spout and dripper are preheated can also affect the actual water temperature, thereby changing the extraction effect. This article will analyze the logic of water temperature selection in detail and share how to maximize the efficiency of hot water through operations such as preheating, making the coffee flavor more pleasant. [more…]