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How to Identify, Understand, and Fix Them In coffee brewing, extraction refers to the process of dissolving flavor compounds from ground coffee into water. When extraction is not properly balanced, coffee can become either under-extracted or over-extracted, both of which negatively affect taste and overall quality. Understanding these two concepts is essential for brewing consistently good coffee—whether espresso or filter. source: BaristaHustle What Is Under-Extraction? Un

Understanding Total Dissolved Solids for Better Brewing TDS stands for Total Dissolved Solids, which represents the total amount of coffee compounds dissolved in your brewed coffee. It is usually expressed as a percentage (%) of the beverage’s weight. What Does TDS Measure in Coffee? When brewing coffee, water extracts various compounds from the grounds, including: • Acids • Sugars • Oils • Bitter compounds TDS measures the concentration of these dissolved solids in

Understanding It Correctly for Better and More Consistent Coffee In coffee brewing, extraction yield is an important concept that is often overlooked, especially by beginners. Understanding and controlling extraction yield helps you create cups of coffee that are balanced, pleasant to drink, and that clearly express the characteristics of the coffee beans. So what exactly is extraction yield, how does it affect flavor, and how can it be better controlled? Let’s explore these

History, How to Read It, and Practical Tips A coffee brewing chart is one of the most useful tools for understanding the relationship between coffee strength, extraction, and flavor balance. Whether you are a home brewer or a professional barista, mastering it can significantly improve consistency and the quality of your coffee. The Origin of the Coffee Brewing Chart The coffee brewing chart was first developed in the 1950s by Dr. Ernest E. Lockhart, a professor at MIT work

If you’ve ever brewed coffee just hours after roasting, you’ve probably noticed something strange:the aroma feels muted, the flavor dull, and the cup somehow “empty.”Then, a few days later — the same beans suddenly taste sweet, balanced, and fragrant. This isn’t your imagination.It ’s pure coffee chemistry . 1. Freshly Roasted Coffee Is Still “Alive” When coffee comes out of the roaster, it’s not stable yet. Inside each bean, hundreds of chemical reactions are still happening

One morning, you lift your cappuccino and gaze at the silky surface of steamed milk — and there it is: a leaf, a heart, or perhaps a tiny rose. In that instant, coffee is no longer just a drink; it’s a fleeting work of art, suspended in aroma and warmth . People call it latte art — the art of painting with milk on espresso. Luigi Lupi – The Man Who Gave Milk a Soul In the early 1990s, in Italy — the birthplace of espresso machine — a man named Luigi Lupi quietly changed th

Coffee lovers today enjoy a quick, rich shot of espresso almost everywhere. But this convenience and flavor come from a machine invented over a century ago that changed how people drink coffee forever. The first espresso machine marked the start of a new era in coffee preparation, influencing culture, technology, and social habits around the world. ! Close-up view of an early 20th-century espresso machine with brass and steel components How the Espresso Machine Came to Be Bef

Coffee is one of the most beloved beverages worldwide, enjoyed by millions every day. But few know where it all began. Ethiopia holds the unique place as the original home of coffee beans, a discovery that changed global culture and commerce forever. This post explores Ethiopia’s role in the birth of coffee, how it spread across continents, and the rich traditions that keep its coffee culture alive today. Ripe coffee cherries growing in Ethiopian highlands The Origins of Coff

When most people thought coffee was unhealthy, one man stood up and said the opposite — and proved it with science. That man is Dr. Bob Arnot, a physician, journalist, and lifelong coffee enthusiast who helped redefine coffee as not just a beverage, but a health powerhouse. Who Is Dr. Bob Arnot? Dr. Robert Arnot, M.D., is an American internal medicine doctor, bestselling author, and former chief medical correspondent for NBC and CBS News.He’s reported from war zones, covered

Coffee is more than just a morning ritual. According to Dr. Bob Arnot — a physician, nutrition expert, and author of The Coffee Lover’s Diet — light roast coffee is one of the richest natural sources of antioxidants, particularly chlorogenic acid (CGA) and polyphenols. These compounds are powerful allies for your health, helping protect your body from inflammation, aging, and chronic diseases. 1. What Are CGA and Polyphenols? Chlorogenic acid (CGA) is a type of polyphenol, a

Before coffee reaches your cup, it starts as a red cherry hanging on a mountain branch. The altitude where that tree grows — whether high in the Andes or low in tropical valleys — shapes the bean’s density, sweetness, acidity, and aroma. Altitude isn’t just a number. It’s one of the most important factors determining coffee quality, influencing everything from how fast cherries ripen to the way flavor compounds develop inside each bean. 1. The Science: Why Higher Usually Mean

Before coffee becomes the fragrant brown beans that fill your morning cup, it begins life as a red, ripe cherry on the branch.The way farmers process that fruit — how they remove the pulp, dry the beans, or wash them — is an art form that shapes flavor and character . Among many techniques, the three fundamental coffee processing methods are Natural (Dry Process) , Washed (Wet Process) , and Honey (Semi-Washed) — three distinct paths that lead to three different flavor wor