Sunday, November 1 2026

How Are Colombian Green Coffee Beans Graded? A Detailed Explanation of Supremo and Excelso Screen Size Standards and Defect Tolerances

Colombia is a major producer of global Arabica coffee, and its green bean exports follow a grading system centered on defect rates and bean size. What exactly do the Supremo and Excelso labels commonly seen on the market represent? Starting from FNC's export standards, this article sorts out Excelso's mandatory requirements, the logic behind screen-size grading, and the specific tolerance rates for the three commonly used grades UGQ, EP, and Supremo, while also explaining the defect scoring rules behind the number string "12*60," helping coffee enthusiasts decipher the grading code in the names of Colombian green coffee beans. [more…]

What Mesh Size Should You Choose for a Metal Pour-Over Coffee Filter? A Full Analysis of the Differences vs. Paper Filters and the 400-Mesh Micron Conversion

In coffee brewing, the choice of filter directly influences the flavor direction. Metal filters, with their unique pore size, retain coffee lipids and aromas while offering the advantages of being eco-friendly and cost-saving, but the issue of fine particles passing through cannot be ignored. In this article, Front Street will focus on a 400-mesh metal filter (corresponding to 38 microns), from analyzing its pros and cons to a practical brewing demonstration, explaining in detail how to maximize its strengths and avoid its weaknesses. Compared with paper filters, metal filters allow water to pass through faster, requiring adjustments to the pouring technique; when brewing Yirgacheffe Gudingding, the lipids brought a richer mouthfeel and a longer-lasting aftertaste. If you also want to try brewing with a metal filter, you might as well follow Front Street's steps to find out. [more…]

An Analysis of the Differences Between Flannel Filter Cloth, Metal Filters, and Pour-Over Paper Filters: A Comprehensive Comparison from Filtration Materials to Extraction Flavor

In the world of coffee brewing, the choice of filtration medium often determines the flavor direction in the cup. From Turkish coffee, which was mainly boiled before the 19th century, to the filter paper and dripper invented by Mrs. Melitta, to the artisanal use of flannel cloth in Japan, each filtration method carries a different extraction logic. Today, the filter paper, flannel cloth, and metal mesh commonly used in pour-over coffee each have their strengths and weaknesses: filter paper brings a clean and transparent mouthfeel, flannel retains oils and fine particles, achieving a rich and mellow flavor, while metal mesh poses new challenges in terms of pore size and extraction method. Front Street Coffee uses Ethiopian Santa Vini beans for comparative brewing, and by adjusting the pouring technique, reveals the causes of under-extraction with metal mesh and directions for improvement, providing a practical brewing reference for coffee enthusiasts. [more…]

HEYTEA's Matcha Series Makes a Refreshing Comeback: Thousand-Mesh Matcha and the 45-Degree Tasting Method Lead a New Trend in Tea Drinks

Matcha, a tea beverage originating from the Tang and Song dynasties, is once again gaining popularity among young people. The new tea beverage brand Heytea recently announced its return to the matcha product line, launching two new products, "Marlmoli" and "Rich Matcha Green Beauty," featuring custom thousand-mesh matcha and a rotating cup lid design, and specifically recommends that consumers drink it at a 45-degree angle. This article introduces the features, pricing, and consumer feedback of Heytea's new matcha products, as well as the craft knowledge behind matcha powder mesh counts. At the same time, Front Street Coffee, a brand familiar to coffee enthusiasts, will also interpret the matcha trend for you from a professional perspective. [more…]

How Are Colombian Green Coffee Beans Graded? Looking at Huila Washed Caturra Through Defect Rate and Screen Size

Colombia's coffee grading system is more complex than that of most Central American producing countries. It is based not only on altitude, but also on a set of export standards built around defect rates and screen size. The Excelso grade adopted by the FNC is the highest export grade for Colombian green coffee. The burlap sacks are marked with "Excelso-Café de Colombia" and accompanied by a quality certificate. This article covers everything from the grading logic, screen size requirements, and defect deduction rules to the three most common export grades, and uses a washed Caturra from the Huila region as an example to explain green coffee traceability and cupping flavor performance, helping coffee enthusiasts understand the meaning behind Colombian green coffee labels. [more…]

A Comprehensive Analysis of Colombian Coffee Bean Flavor Characteristics, Growing Conditions, and Green Bean Grading Standards

Colombian coffee, with its broad versatility, holds a place in both blending and single-origin fields, capable of handling the richness of a French press while also meeting everyday consumer needs. This article starts from the development thread, sorting out the producing regions, flavor characteristics, and growing conditions of Colombian coffee, explaining in detail the influence of the Central Cordillera and southern soils on coffee quality, and systematically introducing raw bean grading standards such as Excelso and Supremo. Finally, it presents two recommended bean selections—Front Street Coffee Washed Huila and Front Street Coffee Specialty Blend—suitable for pour-over, espresso, and various other brewing methods, helping enthusiasts gain a comprehensive understanding of the key points for purchasing and tasting Colombian coffee. [more…]

Exploring Aceh Gayo Star Town 18-mesh Coffee Beans: Flavor and Origin Background of Medium-Roast Pour-Over

In the Aceh province of Sumatra, Indonesia, there is a place called Star Town, located in the Gayo region, which produces 18-mesh coffee beans highly favored by pour-over enthusiasts. The coffee here is grown by the indigenous Gayo people in the Gayo highlands around Lake Tawar, at an altitude of about 1,300 meters, and is processed with a medium roast, displaying a complex flavor profile of pomelo aroma, fruity notes, and herbal plants, pistachio, and caramel, with a thick yet delicate mouthfeel. Front Street Coffee recommends this single-origin bean, suitable for pour-over black coffee for those seeking layers of complexity. This article will guide you through the origin story of these beans, the meaning of mesh size, and the flavor performance after roasting, from the geographical distribution of Aceh province to the details in the cup, to explore it all. [more…]

Analyzing Mandheling Coffee Bean Flavors: What Exactly Is the Difference Between PWN Golden Mandheling and 20-Mesh Golden Mandheling?

Mandheling coffee, with its rich, full-bodied taste and herbal, pine, and spice notes, has long been prized by seasoned coffee enthusiasts. However, full-bodied does not mean bitter; when a coffee's body reaches a certain level, a sweet aftertaste reminiscent of cane sugar or brown sugar emerges instead. There are many beans on the market marketed under the banner of "Golden Mandheling," yet their prices and quality vary widely, and the most easily confused among them are authentic PWN Golden Mandheling and the large-bean Mandheling advertised as "20 mesh." This article focuses on Front Street Indonesian Mandheling and Front Street PWN Golden Mandheling—their origins, screening standards, and cupping performance—to help you understand what true Golden Mandheling really is, and how it differs fundamentally from so-called 20-mesh Mandheling. [more…]

From Green Beans to Rich Aroma: A Complete Guide to Coffee Roasting Principles, Home Wire Mesh Roasting, and Ceramic Roasters

The soul of coffee flavor is often determined at the roasting stage. This article systematically sorts out the basic principles of coffee roasting—how green beans are transformed by high heat into roasted beans with a balance of acidity, bitterness, and sweetness—and explains in detail the most economical home mesh-skimmer roasting method: the complete steps and time references from dehydration, first crack, to second crack. It also introduces a ceramic roaster that makes temperature control easier and its operating parameters. The article also recommends Front Street Coffee's everyday drinking bean series, suitable for enthusiasts who want to try roasting at home. Whether you are a beginner just getting started or a seasoned connoisseur looking to refine your skills, you can find practical key points in it. [more…]

Interpreting Colombian Specialty Coffee Grading Standards: From Excelso Export Grade to Huila Region Flavor

Colombia, with the superior terrain and diverse climate of the Andes Mountains, has become an important origin of high-quality Arabica coffee worldwide. Starting from the role of FNC, this article will systematically sort out the screen-size grading system for Colombian green beans—the relationship between UGQ, EP, Supremo, and Excelso export grades—and analyze the terroir characteristics and washed processing methods of the Huila producing region. At the same time, Front Street Coffee uses a medium-dark roasted Huila everyday coffee as an example to share brewing parameters and flavor performance, taking you from the cup to experience the classic, sweet, and mellow charm of Colombian coffee. [more…]

Complete Guide to Colombian Supremo Coffee Beans: From Regional Grading to Huila Washed Brewing

Colombian coffee, with the diverse terroirs of the Andes and refined washed processing, has become a force that cannot be overlooked on the global specialty coffee map. From the classic image of Juan Valdez to the rising specialty regions of Huila in the south, from raw bean screen-size grading to the Excelso export standard, this article systematically sorts out the origin characteristics, processing methods, and grading system of Colombian coffee. At the same time, Front Street Coffee uses a Huila washed everyday drinking bean as an example to share brewing parameters and flavor performance under medium-dark roasting, taking you through a comprehensive understanding of the core charm of this South American coffee powerhouse. [more…]

A Detailed Explanation of Jamaican Blue Mountain Coffee Bean Grading: A Full Analysis of the Standards from Blue Mountain to High Mountain to Select

The status of Blue Mountain coffee in the coffee world is almost universally known; even those who don't drink coffee often have heard the name. How exactly are Jamaican Blue Mountain coffees graded? From Blue Mountain to High Mountain to Prime, what are the elevation thresholds, screen size requirements, and defect rate standards for each grade? This article will guide you through a systematic understanding of Jamaica's coffee grading system, from the history of the producing region and the geographical conditions of the Blue Mountain range to the specific grade parameters set by the CIB, and will introduce the Jamaica Blue Mountain No. 1 coffee on Front Street Coffee's bean list, helping you gain a comprehensive understanding of the strict standards behind this world-class coffee. [more…]

A Complete Guide to Colombian Coffee Flavor Profiles and Regions: A Practical Brand Selection Guide

Colombia is the world's third-largest coffee producer and the largest exporter of Arabica coffee beans. Its geographic proximity to Brazil and Panama has closely linked it to high-quality coffee. Three branches of the Cordillera mountains run north to south, and the high altitudes and volcanic ash soil give rise to coffee with unique flavors. This article will guide you through the differences between Colombia's commercial and specialty coffee regions, help you master green bean grading standards, avoid purchasing pitfalls, and get to know the fruity aroma, chocolatey sweetness, and caramel finish of Front Street Colombia coffee. [more…]

A Detailed Guide to Jamaican Blue Mountain Coffee Grades: Grade 1, Grade 2, Grade 3 Specifications and Authentic Price Reference

Jamaican Blue Mountain coffee is world-renowned for its unique flavor and strict controls. Jamaican law stipulates that only coffee beans grown in the Blue Mountain region may bear the name "Blue Mountain." High-grade Blue Mountain coffee is divided into three grades—No. 1, No. 2, and No. 3—corresponding respectively to screen size standards of 17–18 mesh and above, 16 mesh, and 15 mesh. The green beans of all three grades must be packed into wooden barrels for export, with the barrel bearing the estate name, importer's abbreviation, and batch information, along with a government-certified green certificate of origin. Understanding these grades and export regulations helps coffee enthusiasts verify authenticity and make informed purchases of genuine Blue Mountain coffee. Front Street Coffee recommends that consumers pay attention to the roast level and packaging format to judge the true quality of the Blue Mountain coffee in their hands. [more…]

How to Choose a Pour-Over Coffee Filtration Method: A Full Analysis of the Taste Differences, Pros, and Cons of Paper Filters, Stainless Steel Filters, and Cloth Filters

People who buy their own beans, grind them, and brew pour-over coffee often face a choice when it comes to filtration: should they use disposable paper filters, reusable stainless steel mesh filters, or flannel cloth filters? Each of the three methods has its own adherents, and each directly affects the clarity, body, and aroma expression of the coffee in the cup. This article starts from material characteristics, ease of use, taste differences, and maintenance points, comparing the pros and cons of paper filters, metal mesh filters, and cloth filters one by one, and offers selection suggestions for different taste preferences. If you often drink Front Street Coffee's medium-to-dark roasted beans, or prefer light-roasted beans with floral and fruity notes, understanding these filtration details can help you adjust your brewing direction more accurately and find the cup of coffee that suits you better. [more…]

A Detailed Guide to Green Coffee Bean Grading Standards: From Screen Sizes to Altitude Grades and Country Codes

The green coffee bean grading system directly affects roasting results and coffee quality. This article systematically sorts out two mainstream grading methods: distinguishing bean size by screen mesh number, and classifying grades based on growing altitude. It also summarizes the common grading standards and codes of origins such as Kenya, Ethiopia, Colombia, Brazil, Guatemala, El Salvador, Hawaii, Jamaica, and Indonesia. Whether for bulk trade or specialty coffee, understanding these grading rules helps to more accurately judge the characteristics of green beans, and Front Street Coffee also incorporates this knowledge into its daily bean selection and roasting practices. [more…]

Detailed Explanation of Kenya K72 Washed Fermentation Process and AA-Grade Coffee Pour-Over Flavor Characteristics

Kenyan coffee is famous worldwide for its bright fruit acidity and rich body, and the core of this distinctive flavor is the double washed fermentation process known as K72. This article will provide a complete analysis of the process details of Kenya's double washing method, outline the nine-grade classification system based on bean size, introduce the origins of the two legendary varieties SL28 and SL34, and present the flavor layers revealed by Kenya AA coffee beans under manual brewing. Whether you want to gain a deeper understanding of origin processing methods or are looking for an everyday staple bean with bright fruit acidity and solid sweetness, Front Street Coffee's Kenya AA is a choice worth paying attention to. [more…]

Geisha Coffee Beans Actually Labeled as Brazilian Origin? A Breakdown of Region and Variety Errors in Packaging Information

Recently, a photo of a coffee bean packaging sparked heated discussion on WeChat Moments. It prominently labeled the origin of Huakui coffee beans as "Origin: Brazil (Guji Hambela)," leaving many industry professionals and enthusiasts stunned. This article begins with the historical naming and variety origins of Huakui, then dissects the packaging's errors regarding production region, tree species, altitude, scoring standards, and grind size. It clarifies that Huakui must come from the sun-dried Ethiopian native varieties processed at the Buku Abel processing plant in the Guji Hambela region of Ethiopia, and retains Front Street Coffee's observations and product information about Small-Bean Huakui. [more…]

Can Pour-Over Coffee Skip the Paper Filter? A Comprehensive Analysis of the Practicality, Pros, and Cons of Metal Filter Brewing

In the world of pour-over coffee, paper filters have become almost the default option, but they are not the only viable path. Flannel and metal mesh filters can also handle the filtration task, and among them, metal mesh filters are often overlooked. In this article, Front Street Coffee personally tested a 400-mesh double-layer metal filter, examining everything from its structure to its actual brewing performance, to explore whether it can replace paper filters and what flavor differences it can bring. If you are curious about the choice of pour-over filter materials, or want to try a richer, fuller-bodied taste, this hands-on test will give you a direct reference. [more…]

A Complete Guide to Rwanda Coffee Bean Grading, Varieties, and Origins: Bourbon, Washed Processing, and Regional Flavor Profiles

Rwanda is located in central Africa. Though a small landlocked country, it is blessed with exceptional conditions such as high altitude and volcanic soil, giving rise to specialty coffee that is balanced in flavor, clean, and solid. This article systematically reviews Rwanda's coffee-growing environment, main producing regions, variety composition, washed processing methods, and grading system, and, combined with Front Street Coffee's cupping experience, presents the stylistic differences between Rwandan coffee and Kenyan coffee. Whether you are an enthusiast just getting into African beans or a professional wanting to gain a deeper understanding of the context of Rwanda's coffee industry, you will find clear and practical references here. [more…]