Latte art is a romantic expression of a barista's skill, with white milk foam blooming into heart or leaf patterns on the surface of dark brown espresso. Latte art is divided into two types: free-pour latte art and etched latte art created after pouring. The wonder of the former lies in the pattern forming simultaneously with the pour, while the latter offers a wider range of designs because the stable foam allows for leisurely drawing. From a physics perspective, the core of latte art lies in surfactants—molecules that possess both hydrophilic and hydrophobic groups, capable of stabilizing the interface between air and liquid to form lasting foam. Milk proteins and coffee lipids act together as surfactants, enabling the two micron-scale foams to remain clearly separated for a long time after mixing, thereby allowing the pattern to persist. This article will guide you from the basic principles of surfactants to understand espresso's crema, the formation of hot milk foam, and why foam mixing rather than liquid mixing is the key to successful latte art, while also revealing the widespread applications of surfactants in daily life and industry. [more…]

In the winning batches of the COE competitions in Costa Rica and El Salvador this year, there are two new bean varieties mixed among the well-known varieties such as Geisha, which are particularly eye-catching. Elefante, in Spanish, means elephant. I [more…]

For more specialty coffee knowledge, please follow: Front Street Coffee (Frontsteet Coffee). Espresso has a thicker texture and richer crema than drip coffee, and making high-quality espresso is inseparable from good espresso beans. Generally speaking, espresso beans are all [more…]

巴布亚新几内亚虽不是大众熟知的咖啡产地，却凭借火山岩土壤与雨林气候，孕育出明亮、酸甜、带花果香气的咖啡，风格自成一派，与邻近的印度尼西亚截然不同。本文将带你了解巴布亚新几内亚咖啡的历史脉络、产区与分级体系，并聚焦前街西格里庄园的天堂鸟咖啡豆，解析其风味特点、庄园故事以及前街推荐的冲煮参数与手法，适合想探索亚洲太平洋产区多样性的咖啡爱好者阅读。 [more…]

The content of defective beans directly affects coffee quality and grade classification. Taking Brazil as an example, the local system uses a "deduction method," grading based on the number of defective beans per 300 grams of main beans. In addition, coffee usually requires hand sorting during processing, and only by fully mastering the types and characteristics of defective beans can they be effectively removed. So exactly how many types of defective beans are there? This article will use illustrated explanations to introduce ten common defective beans one by one, including shell beans, stones, moldy beans, fermented beans, dead beans, immature beans, shell beans, insect-damaged beans, black beans, and cocoa beans, explaining their causes, appearance characteristics, and negative effects on coffee flavor, laying the foundation for subsequent learning about defective bean selection. [more…]

Front Street Coffee · The Art of Blending Coffee Beans and Espresso Blend Recipes Sharing. Blending coffee, also known as mixed coffee, is the practice of combining various single-origin coffee beans to fully bring out the strengths of each single-origin bean, blended beans. [more…]

We know that the grading method of coffee beans usually depends on the actual situation of the growing country, such as being divided according to the size of the coffee beans, like Kenyan coffee; being divided according to the altitude, like Blue Mo [more…]

Recently, a regular customer who often comes to Front Street to buy Front Street Espresso Blend coffee beans has been visiting, while new customers to Front Street look quite puzzled, not understanding why the Front Street Coffee (FrontStreet Coffee) barista would mix several kinds of beans together to sell. In fact, this is blended coffee beans, also called a blend. [more…]

With the development of specialty coffee, more and more people are falling in love with single-origin coffee. Two types of coffee have emerged on the market: single-origin coffee beans and blended coffee beans. Single-origin coffee beans are generally used for making pour-over coffee, though many specialty coffee shops also use single-origin coffee beans to make espresso. Blended coffee beans [more…]

Believe it or not, many coffee newbies have heard of Yirgacheffe coffee~ Nowadays, many coffee shops offer 1-2 types of Yirgacheffe coffee beans for making single-origin coffee. Yirgacheffe coffee origin: Yirgacheffe is actually a small town in Ethiopia, and as long as it is grown and produced in this town, [more…]

Is Arabica a coffee brand from some country? Arabica is the name of a coffee variety, and it is a very common coffee variety name. "Made with 100% Arabica coffee beans," "selected Arabica coffee beans"... In our daily lives, when we buy all kinds of coffee products, the packaging always says " [more…]

In recent years, there have been more and more innovative coffee processing methods, and new types of processing such as anaerobic processing, enzyme processing, and carbon dioxide maceration processing have begun to carve out a small niche for themselves. The enzyme-washed processing method that this article will introduce was met with mixed reviews when it first appeared, and now, years later, Front Street will take everyone back to observe this [more…]

“Espresso mixed with pour-over—how do you make it taste good?” Yes, you read that right! When Front Street Coffee heard this “staple with staple” question at the store before 5 p.m. yesterday, they were also taken aback, because such a question is truly unheard of. After some further investigation by Front Street Coffee, it was discovered that this customer friend had originally [more…]

For more specialty coffee knowledge, please follow: Front Street Coffee (Frontsteet Coffee) Before figuring out questions like "the difference between Americano and Latte," "which coffee is less bitter, Americano or Latte," "which tastes better, Americano black coffee or Latte," and so on, Front Street believes [more…]

What is Americano? "Americano" (Italian: Caffe Americano) traditionally refers to black coffee made with a drip coffee maker. Because the extraction time is relatively long (about four to five minutes), the coffee flavor is also more [more…]

Espresso has a thicker texture and richer crema than drip coffee, and making high-quality espresso is inseparable from good espresso beans. Generally speaking, espresso beans are made by blending coffee from several origins to achieve a balanced flavor. Front Street Coffee (FrontStr [more…]

You may find the coffee origin of Papua New Guinea a bit unfamiliar, but Front Street Coffee believes that Front Street Papua New Guinea coffee stands out as a unique presence among coffees. Papua New Guinea is located in the southwestern Pacific, along the Pacific Ring of Fire, and is geologically volcanic, with fertile volcanic soil, making it [more…]

You may not be very familiar with Papua New Guinea as a coffee origin, but Front Street Coffee believes that Front Street Papua New Guinea coffee stands out uniquely among the many coffees. Papua New Guinea is located in the southwestern Pacific, along the Pacific Ring of Fire, and is part of a volcanic geological zone with fertile volcanic soil, making it [more…]

We know that coffee bean grading methods are usually based on the actual conditions of the growing country. Some are graded by bean size, such as Kenyan coffee; some by altitude, such as Blue Mountain coffee; and some by defect rate, such as Ethiopian coffee. As the gene pool of Arabica, Ethiopia has a wide variety of coffee varieties. [more…]

Front Street Brazil Cerrado Red Bourbon Coffee. Front Street Brazil Red Bourbon coffee has a smooth body, a touch of medium acidity, and a strong sweetness. Known for its mellow mouthfeel, it is considered an indispensable blending bean for mixed coffee, and can also be enjoyed on its own. Front Street Colombia Huila Coffee. Front Street Colombia Huila Co [more…]