Monday, September 21 2026

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…]

A Practical Guide to Coffee Latte Art Etching Pens: A Full Breakdown of the Details from Choosing a Pen and Picking Up Color to Controlling Lines

Although a latte art pitcher can handle most patterns, it often falls short when it comes to fine lines and localized detailing. That's when you need a capable assistant—the etching needle. Coffee enthusiasts have jokingly called it a latte art "cheat code," and its capabilities are indeed powerful, but actually getting the hang of it is far from as simple as it seems: lines too thick or too thin, patterns blurring and atomizing, designs that just won't draw on—problems pile up one after another. This article draws on Front Street's practical experience to systematically explain the types and structures of etching needles, how to use them, and key points to keep in mind, including how to prepare extra "paint," gauge the right amount to dip, control line thickness, and improve drawing speed—helping you truly master this little tool and make your latte art more refined. [more…]

Luckin employee responds to customer taste request with handwritten note in red pen on receipt, customer complaint escalation sparks heated discussion

A coconut milk latte with a note saying "make it a bit lighter," because the staff member filled the receipt with explanatory text in red marker, sparked a customer complaint storm that escalated from social media to the media. The customer felt the store's attitude was disrespectful and demanded a home visit apology; the store explained that it was busy at the time and could not call each customer individually. After the incident trended on social media, netizens' opinions were sharply divided, and beverage industry workers also chimed in. In this dispute caused by a red-text receipt, who really has a point? [more…]

How is the extraction yield of immersion brewing calculated? Concentration measurement and practical demonstration under the Golden Cup theory

In the Golden Cup extraction theory, extraction yield and concentration are the two core metrics for assessing the flavor state of coffee. However, coffee that falls within the ideal range is not necessarily delicious, and coffee outside the range is not necessarily undrinkable—the key lies in how to use these two values to help adjust the brewing plan. From the perspective of Front Street, this article first clarifies the basic definitions and ideal ranges of extraction yield and concentration, then explains in detail how to use two sets of concentration measuring tools, and finally uses the Santa Vini anaerobic natural beans as an example to fully demonstrate the entire process from weighing the liquid weight to plugging it into the formula to calculate the extraction yield. [more…]

The Complete Guide to Making Caramel Macchiato: Eight Steps from Choosing Coffee Beans to Drawing Patterns with a Latte Art Pen

Caramel Macchiato is the first cup many people choose when they step into Starbucks, and its soft, silky texture and sweet flavor make it unforgettable. But have you ever thought that this classic drink can actually be easily recreated at home? This article will break down the process of making an iced caramel macchiato in detail, from choosing Front Street Coffee's classic espresso blend beans, to extracting the espresso, steaming the milk, and then every detail of drizzling caramel and using a latte art needle to draw patterns, presented one by one in eight steps. Whether you are a coffee enthusiast who has just started out, or a home barista hoping to refine your skills, you can gain practical operational guidance from it and make an iced caramel macchiato that is both visually appealing and flavorful with your own hands. [more…]

An In-Depth Analysis of Coffee Extraction: Concentration Measurement, Extraction Yield Conversion, and Calculation Methods for Various Brewing Devices

Coffee extraction is the key step that determines flavor. About 30% of coffee beans consists of soluble substances, including both aromatic components and mouthfeel-related compounds, and a higher extraction yield does not necessarily mean better quality. This article systematically introduces concentration measurement methods (refractometer, conductivity pen, evaporation and drying), explains the extraction yield conversion formula in detail, and provides specific calculation steps for different brewing devices such as immersion, pour-over, and espresso. It also includes the golden cup concentration recommendations from the SCAA and SCAE, as well as relevant product information from the Front Street Coffee brand, to help enthusiasts understand extraction more scientifically. [more…]

Can repeatedly boiled water still be used for pour-over coffee? Testing TDS changes and extraction flavor differences

When brewing coffee, most people focus on whether the water's TDS is in the appropriate range, but few pay attention to whether repeatedly boiling the hot water affects the coffee's flavor. Some believe that coffee brewed with water that has been boiled multiple times will decline in quality. To verify this claim, Front Street Coffee designed a controlled experiment, using a TDS test pen and a coffee concentration meter, brewing a medium-light roasted Sidamo Hachira 8.0 by immersion in a clever cup, using water boiled for the first through fourth times respectively, and recording the TDS value of the water and the coffee concentration performance each time. This article will present the experimental setup, operating procedure, and data results one by one, to help coffee enthusiasts determine whether repeatedly boiled water is truly unsuitable for brewing coffee. [more…]

A Barista's Daily Record: Those Moments with Customers That Leave the Person Behind the Counter Not Knowing Whether to Laugh or Cry

Having been immersed in the coffee industry for many years, the author is both a barista behind the counter and an observer on social media. Over these years, consumers have gone from knowing nothing about coffee to becoming increasingly particular, and the industry has indeed made progress. However, dealing with all kinds of customers every day, one always encounters some both amusing and exasperating moves—from "an Americano with milk" to bringing one's own water quality testing pen, from cupping spoons to TDS concentration meters. These moments not only test a barista's professional competence but also reflect the various misunderstandings in the process of coffee culture becoming widespread. This article records seven real-life scenarios with escalating shock levels, and after each story provides professional analysis and suggested responses. Whether you are a practitioner or an enthusiast, you can see both the absurdity and the reality of the coffee world in them. [more…]

Luckin Coffee's zero-yuan merchandise ignites a crafting craze, as turning paper bags into limited-edition Year of the Dragon items becomes a new trend.

Co-branding between chain brands has long become commonplace, yet Luckin Coffee's frequent moves in co-branded marketing still turn heads. From cross-industry collaborations to routine co-branding, Luckin has consistently demonstrated keen market instincts and creative capabilities. On January 22, Luckin joined hands with artist Han Meilin for a second time to launch Year of the Dragon limited-edition co-branded merchandise, with paper bags and cup sleeves rolling out nationwide. Subsequently, Luckin officially launched the call "Every generation has its own merch makeover frenzy" on Xiaohongshu, sparking a creative carnival among Luckin's craftspeople. From pen holders and picture frames to oracle bone script mahjong and Chinese-style oil-paper umbrellas, netizens transformed free merchandise into works of art brimming with ingenuity. This article will take you through the highlights of this zero-cost DIY merch craze, letting you feel the creative vitality that comes from brand-consumer interaction. [more…]

Barista Hand-Drawn Paper Cups Become a New Holiday Trend: From Improvised Doodles to Assembly-Line Creative Merch

On Christmas Eve, the festive atmosphere in coffee shops is not only reflected in the drinks and decorations—the takeaway cups have also become a canvas for baristas to unleash their creativity. From the initial casual sketches of Christmas trees and Santa hats to the later non-stop fancy doodles, hand-drawn Christmas cups have gradually spread throughout the independent coffee scene. Some draw on cups while making coffee, while others have turned doodling into an assembly-line operation to meet customer expectations. This low-cost, heartfelt holiday merchandise not only gives customers a unique keepsake but also allows baristas to find the joy of handmade craft amid their busy schedules. This article will take you through how this hand-drawn trend evolved from a fleeting whim into a Christmas season staple. [more…]

KFC's collaboration toys with Spy x Family face quality concerns, as defects in Anya merchandise spark consumer dissatisfaction

Recently, the collaborative toys released by KFC in partnership with the popular anime "Spy x Family" have sparked widespread discussion due to quality control issues. Multiple consumers have reported on social media that the Anya dolls they received have obvious stains, uneven painting, and even parts installed backwards, with some stains proving difficult to remove. This collaborative meal set went on sale starting September 6 and includes four random toys, but many fans have encountered the dual troubles of store stock shortages or poor product quality. Although some consumers successfully exchanged defective items, the incident still highlights the shortcomings in production and quality control for IP collaboration merchandise, which deserves attention from both brands and fans. [more…]

Luckin's Pingu collaboration merchandise meets a cold reception: Controversy arises after high-priced bundles are switched to free giveaways

Luckin Coffee's recent collaboration with the claymation character Pingu has sparked considerable discussion. In the early stage of the campaign, consumers had to buy designated set meals or two cups of the new drink to get the merchandise, and many fans placed orders at full price or even stockpiled coffee coupons for this. However, not long after the campaign ended, Luckin released the same merchandise again with a lower threshold or even for free, leaving consumers who had bought at a high price earlier feeling dissatisfied. At the same time, employees reported on social platforms that the merchandise was selling poorly, with inventory piling up at some stores, and materials such as stickers even being discarded or given away. From the teaser phase to the rerun, this collaboration reflects the gap between a brand's marketing节奏 and consumers' expectations. [more…]

Luckin Coffee's Genshin Impact collaboration bubble gun cup criticized: 183.5 yuan aluminum cup can't hold hot water, fans call it a beautiful piece of junk

Luckin Coffee's recently launched bubble gun cup, a collaboration with Genshin Impact, has sparked widespread discussion. This merchandise cup, modeled after a game character's signature weapon, generated significant anticipation among players during its promotional phase. However, following its official release, it faced considerable criticism due to material issues. It is reported that the collaborative coffee voucher package was priced at 183.5 yuan and sold out rapidly after launch, but subsequently, some users reported being forced to accept refunds, suggesting possible system vulnerabilities. What further dissatisfied fans was the official specification that the cup body is made of aluminum, with an explicit warning against filling it with beverages exceeding 50°C. Many exclaimed that they had "bought a cold water cup at a high price." Comments also pointed out potential health risks associated with prolonged use of aluminum cups, criticizing them as flashy but impractical. Nevertheless, some netizens noticed that the official promotional video seemed to suggest that this cup is more suitable for use as a pen holder. [more…]

Visiting Manner's Most Tranquil Store: The Warm Practice of Silent Baristas and Disability Employment

In the coffee consumption experience, interaction with baristas is often a bonus. But when you encounter a hearing-impaired barista, communication shifts from speech to pen and paper. Recently, a customer at a Manner store noticed a sign on the counter reading "I am a silent barista," leading to a quiet yet warm consumption experience. Some were moved by the focus and effort of silent baristas, while others pointed out the practical efficiency challenges in collaboration from an employee's perspective. In recent years, with policy encouragement and corporate participation, silent cafes have emerged in multiple cities, providing not only jobs but also livelihood skills. Front Street Coffee has observed that to bridge the communication gap, some stores are trying solutions such as sign language menus and voice-to-text devices. This article will present multiple perspectives from consumers, employees, and brands to explore the real situation and future possibilities of silent baristas in chain stores. [more…]

Luckin's Loopy limited-edition cups get fan remixes, with "accidental collabs" featuring David Tao and JJ Lin unexpectedly boosting sales.

Luckin Coffee has been making frequent moves this week, first collaborating with the top-tier IP Loopy, and then successively announcing celebrity endorsement partnerships with figures like Tan Jianci and Liu Yifei, keeping its popularity steadily climbing. However, what truly set social platforms abuzz was a wave of "secondary creation" spontaneously sparked by music fans—some netizens took the Loopy limited-edition hot drink cups launched last week and used markers to draw slanted bangs or blunt bangs on the little beaver, which unexpectedly made it look like David Tao and JJ Lin, quickly prompting a large number of fans to follow suit and show off their own "limited-edition collaboration cups." This mix-up not only had fans having a great time but also unexpectedly boosted sales of the limited-edition cups at Luckin stores. This article takes you through this amusing event, from misunderstanding to carnival, to see how fans used a single pen to turn coffee cups into "Mandopop collaboration editions." [more…]

Specialty Coffee Knowledge Self-Test: From Multiple Choice to True/False, Test Your Coffee Expertise in One Go

2022 has already turned the page—did you complete the reading plan you set at the beginning of the year? This coffee knowledge self-test is the perfect opportunity to check your learning results. The questions cover core areas such as coffee origins, varieties, producing regions, processing methods, extraction, and storage, and include multiple-choice, fill-in-the-blank, and true-or-false formats, with answers and detailed explanations provided. Whether you are preparing for a barista exam or simply want to reinforce your specialty coffee knowledge, you can pick up a pen and paper, answer each question one by one, and then check your answers to fill in the gaps. At the end, there is also Front Street Coffee's selected bean list and communication channels, which are worth a look. [more…]

Pour-Over Coffee Water Pouring Techniques Explained: Key Steps of Scott Rao's Spin and Shake Method and Dripper Flow Control Tips

Among the many pouring techniques in pour-over coffee, there is one method that looks quite bold and unrestrained—the Rao Spin, created by coffee industry celebrity Scott Rao. This multi-talented figure—roaster, barista, and author—is renowned in the industry for his books such as The Coffee Roaster's Companion, The Professional Barista's Handbook, and The Coffee Brewer's Handbook. In Rao Spin, "Spin" means to rotate or shake, so Front Street Coffee habitually calls it the Lao-style shaking method. This article will introduce the origins and characteristics of this brewing method, break down its pouring steps in detail, and also discuss the principle behind gripping the dripper to control the flow rate. [more…]

How to Raise Coffee Seedlings and Establish a Plantation? A Systematic Cultivation Guide from Propagation and Planting to Pruning and Fertilization

The flavor foundation of a good cup of coffee is laid the moment the seed touches the soil. This article systematically outlines the complete technical chain of coffee from seedling propagation to plantation management: seed collection and washing in seed propagation, nursery establishment, germination acceleration and transplanting, and seedling-stage care; the key operational points of cutting and grafting in asexual propagation; and then extends to coffee plantation site selection and planning, land clearing and field planting, shade tree configuration, single-stem and multi-stem training and pruning techniques, as well as soil management measures such as weeding and mulching, deep plowing and soil improvement, and irrigation and fertilization. For enthusiasts who wish to gain a deeper understanding of the logic of coffee cultivation and build a systematic awareness from origin to cup, this is a solid technical reference. The variety terminology and operational standards involved in the [more…]

Yirgacheffe Pour-Over Beans | Does Washed Yirgacheffe Have Floral and Fruity Notes? How to Brew Ethiopian Single-Origin Specialty Coffee Beans for the Best Taste?

"Yirgacheffe flavor" refers to the unique coffee flavor cultivated by the Yirgacheffe producing region! The Yirgacheffe region is located in Ethiopia, with an average altitude of around 2,000 meters, making it one of the highest-altitude producing regions in Ethiopia. The higher altitude extends the ripening time of the coffee cherries, allowing the coffee enough time to accumulate [more…]

Starbucks delivery bag messages spark customer dissatisfaction, "chicken soup" copy in Star Delivery questioned

Recently, a netizen shared on social media her experience of ordering a Starbucks delivery in Beijing, saying that after receiving the order she found two handwritten "inspirational quotes" on the outer packaging bag, including "Don't judge others, for you never know what someone else is going through" and "Only tolerance, kindness, and generosity are worthy of your excellence." The netizen said she felt uncomfortable upon seeing these words, believing they carried a tone of accusation. She then contacted the store involved and was told that the words were meant as positive blessings and that the original intention was not to attack. After the incident continued to escalate, Starbucks customer service and the store involved both responded, acknowledging that the words were written by a staff member and expressing an apology. This incident has also sparked public discussion about the boundaries of communication between brands and customers, especially during a period of sensitive public opinion, and whether similar "dual-interpretation" copywriting may backfire. [more…]