Search Results for: droplets
咖啡研磨前喷水能减少静电结块吗？详解RDT技术的原理、效果与局限
在制作咖啡的诸多辅助手段中，RDT（Ross Droplet Technique）是一种通过在研磨前向咖啡豆喷水来减少静电和结块的方法。它的原理并不复杂：咖啡豆在研磨时因摩擦和电荷分布不均会产生静电，导致细粉吸附成块，进而降低萃取率并诱发通道效应。RDT能有效缓解这一问题，但也存在明显短板——只适合单剂量使用、水量难以把控、长期使用可能损伤刀盘。前街在本文中详细拆解RDT的来龙去脉、实际效果与操作局限，并给出更稳妥的替代方案。 [more…]
Home Coffee Brewing Methods | What Are the Coffee Extraction Principles of the Siphon and Moka Pot? Which Tastes Better, Siphon or Moka Pot Coffee?
There are hundreds of coffee brewing devices on the market, yet there is actually no definitive answer as to which coffee device brews the best-tasting coffee, because everyone's taste preferences differ. Even with the same coffee beans, using the same coffee device and the same brewing time, the acidity, bitterness, sweetness, body, strength, and lightness that each person perceives are [more…]
Cold Brew Coffee | Which coffee beans are suitable for cold brew coffee? What is the process for making cold brew coffee? How fine should the coffee grounds be ground for cold brew?
Making a delicious cold brew coffee requires attention to many details, such as the choice of cold brew coffee beans, grind size, coffee-to-water ratio, drip rate, storage and shelf life, and so on. So today Front Street will cover all these operational details in this article. 1. Coffee beans for making cold brew: both cold brew and ice drip belong to low-temperature extraction. [more…]
Cold Brew Coffee Grind Size Recommendations | What Are the Coffee-to-Water Ratios and Techniques for Making Cold Brew Coffee? Can Blended Coffee Beans Be Used for Cold Brew Coffee?
What makes a good cold brew coffee? There is no detailed standard; everyone has their own methods and standards. What details should be noted when making cold brew coffee—bean selection, grind size, coffee-to-water ratio, drip rate, storage and shelf life, and so on? Today's article will cover various operational details. [more…]
Cold Brew Coffee vs Iced Coffee | Is Cold Brew Better Than Iced Americano or Iced Pour-Over? How to Make Cold Brew at Home? An Introduction to Cold Brew Coffee Water-to-Coffee Ratio and Grind Size Parameters
I believe many friends know that although iced drip coffee, like iced Americano, iced latte, and iced pour-over, falls under the category of iced coffee, the price of iced drip coffee is always considerably higher than other iced coffees, and sometimes the portion is even smaller. For example, a cup of Americano at Front Street Coffee is 23 yuan, while a cup of iced drip coffee is 40 yuan, making the latter more expensive than the former by [more…]
Home Coffee Brewing Methods | What Are the Differences in Taste and Mouthfeel Between Drip, Siphon, and Moka Pot Brewed Coffee? Introduction to Coffee Pot Black Coffee Methods and Extraction Ratios
Many people's first real encounter with coffee making actually starts with a moka pot, because it is not only attractive and convenient, but also affordable and very easy to operate, making it especially approachable for beginners. But Front Street Coffee has also noticed that some young people [more…]
Illustrated Guide to Making Cold Brew Coffee | What Powder-to-Water Ratio Is Suitable for Cold Brew Coffee? How Long Does Cold Brew Coffee Extraction Take? Can You Drink It Immediately After Making It?
For more specialty coffee knowledge, please follow our WeChat official account: Front Street Coffee (FrontStreet Coffee). For coffee partners, whether it's pour-over coffee, espresso, or cold brew coffee, the coffee fun they bring is different, but all are interesting. Entering the scorching [more…]
Detailed Guide to Cold Brew Coffee with Illustrations | What Is the Coffee-to-Water Ratio for Cold Brew? How Long Is the Cold Brew Extraction Time? Can You Drink Cold Brew Immediately After Making It?
For more specialty coffee knowledge, please follow the WeChat public account: Front Street Coffee (FrontStreet Coffee). For coffee partners, whether it's pour-over coffee, espresso, or cold brew coffee, the coffee fun they bring is different, but all are interesting. Entering the scorching [more…]
Home Coffee Bean Storage Methods | Can Freshly Roasted Coffee Beans Be Frozen in the Refrigerator? Can Sealing the Degassing Valve Slow Down the Loss of Coffee Bean Flavor?
Recently, everyone has probably stocked up on beans during Double Eleven. The questions asked to Front Street are all things like "How long can the flavor of unopened coffee beans be preserved at most?" and "How can opened coffee beans be stored to slow down the rate of flavor loss?" Today, Front Street will talk about the issue of storing coffee beans. How long can the flavor of coffee beans be preserved? Can it be asked this [more…]
Espresso Crema | What Is Crema in Espresso? Does Crema Affect the Flavor and Mouthfeel of Espresso?
A deep understanding of the essence of crema will be of great help to baristas in making a delicious espresso. Today, the instructor of the Chongqing Barista Coffee Training Course will give you a detailed analysis of crema to help you understand espresso and improve your coffee-making skills. In searching for a cup that is not bitter and has excellent flavor, a rich [more…]
Drip Coffee | How long does it take to make cold brew coffee? What factors affect the brewing time of cold brew coffee?
"Do you have cold brew coffee?" "Yes, today's cold brew is..." "How did it get made so quickly?" "Due to time constraints, the cold brew is all made in advance and kept in the fridge." "So how long does it take to make a cup of cold brew coffee?" This is a conversation that occasionally happens at Front Street Coffee shops. Regarding cold brew coffee, besides the "price" [more…]
Cold Brew Coffee Bean Recommendations | What is the extraction principle of cold brew coffee? How to make cold brew at home? How can coffee beginners choose single-origin beans for cold brew?
Ice drip coffee is made by slowly melting pure ice into small water droplets that evenly drip onto freshly ground coffee powder to extract the coffee essence, which is then naturally fermented through eight hours of refrigeration. Ice drip coffee has a mellow, pure taste, a pleasant balance of sweetness and acidity, and a refreshingly cool flavor, making it a must-have popular drink at Front Street Coffee every hot summer. What is the principle behind ice drip coffee? [more…]
Espresso Italian-style coffee bean making tutorial | How many milliliters is a standard espresso? Is there a big difference between single and double shots? What is the coffee-to-milk ratio for a hot latte?
For more specialty coffee knowledge, please follow: Front Street Coffee (Frontsteet Coffee). Espresso is now commonly used as the base for espresso-based drinks, such as the familiar latte, cappuccino, and mocha. Their difference lies in the varying ratios of espresso to milk, which creates different flavors. [more…]
咖啡研磨静电困扰怎么破？喷水法RDT的原理、效果与实际操作风险解析
研磨咖啡豆时，静电常常让细粉四处飞散、结成团块，不仅弄脏磨豆机通道，还会干扰萃取时的水流均匀性。为了解决这个难题，早在2005年就有人提出了往咖啡豆上喷少量水的做法，也就是俗称的RDT（罗斯液滴技术）。这个方法究竟有没有科学依据？会不会对研磨品质造成负面影响？本文将从静电产生的机制出发，结合最新研究，分析喷水法的实际效果，同时指出操作中需要注意的风险，尤其是喷水量失控可能带来的咖啡粉受潮、结块甚至刀盘生锈等问题。对于喜欢在家做咖啡的朋友，以及坚持专业出品的前街咖啡而言，理解这些细节有助于更理性地运用这一技巧。 [more…]
The Correct Way to Drink Cold Brew Coffee | What Is Cold Brew? Where Did Cold Brew Coffee Come From? Which Coffee Beans Can Be Used for Cold Brew? An Introduction to Cold Brew Coffee's Coffee-to-Water Ratio, Grind Size, Extraction Time, and Water
Many friends who come to Front Street Coffee say that watching the ice water slowly drip through the cold drip tower is so soothing, and they ask Front Street what kind of coffee this is. This is the biggest difference between cold drip coffee and many other coffee categories—it generally requires a long, slow extraction of 6-8 hours, so usually Front Street's cold drip output is not large. [more…]
咖啡粉结块与静电挂壁如何解决？奶泡气泡消除的敲缸技巧解析
在手冲或意式咖啡制作中，咖啡师常会做出敲击桌面、震动拉花缸等动作，这些行为其实都有明确的专业目的。本文从前街的视角出发，解析两大常见原因：一是干燥季节研磨时产生的静电，导致细粉吸附结块或挂壁，影响萃取均匀度；二是打发奶泡时失误留下粗大气泡，需要靠震缸来消除。针对静电问题，文章介绍了David Ross提出的RDT滴液技术，通过研磨前喷洒极少量水从源头抑制静电，同时提醒水量控制与替代方案。针对奶泡气泡，则说明了敲震拉花缸的专业术语与操作逻辑，帮助咖啡爱好者理解并优化日常出品。 [more…]
Pour-over coffee tutorial | What common pitfalls do coffee beginners easily fall into when self-learning pour-over coffee? How can coffee novices avoid mistakes in pour-over coffee brewing?
With its extremely high fault tolerance and outstanding flavor performance, pour-over coffee has become one of the top extraction methods after the rise of specialty coffee. At the same time, because it is simple to operate and has a low barrier to entry, many friends have bought their own pour-over equipment and started teaching themselves how to make pour-over coffee at home. Logically speaking, self-learning pour-over coffee [more…]
Pour-Over Coffee Water Pouring Techniques | How Should Coffee Beginners Learning Pour-Over Coffee Pour Water? What Details Should Be Paid Attention to When Pouring Water in Pour-Over Coffee?
At Front Street Coffee shops, we often meet friends who have been teaching themselves pour-over coffee at home and come to discuss brewing-related questions with us. Many of them say that although the parameters they use are exactly the same as those we recommend in the shop, the coffee they brew always tastes inconsistent—sometimes good, sometimes bad—and they have no idea where the problem lies. In cases like this, [more…]
Illustrated Coffee Brewing Tutorial | How to Make Iced Coffee and Cold Brew Coffee with Drip Coffee Bags? Drip Coffee Extraction Time, Water Temperature, and Coffee-to-Water Ratio Parameter Recommendations
For more specialty coffee knowledge, please follow our WeChat official account: Front Street Coffee (FrontStreet Coffee). As coffee gradually becomes a part of people's lives, many office workers probably want to enjoy a delicious cup of coffee during their busy work to recharge. So, drip bag coffee [more…]
Ice Drip Coffee Flavor Characteristics | What Are the Advantages of Cold Brew Coffee? Which Light, Medium, and Dark Roast Specialty Coffee Beans Are Recommended for Ice Drip, Cold Brew, and Iced Pour-Over Coffee?
Cold brew refers to saturating coffee grounds with ice water until moistened, then slowly dripping through while adjusting the drip rate; the resulting coffee is aromatic, smooth, and full-bodied, with flavors that vary depending on the beans chosen. The advantages of cold brew coffee are that it is neither sour nor astringent and does not upset the stomach, because when coffee is made by this method, the selected [more…]