在咖啡圈里，总有一些术语让人摸不着头脑，By pass就是其中之一。字面翻译为“旁路”或“绕路”，但它究竟指什么？简单来说，它描述的是那些没有经过咖啡粉、直接进入杯中的水，以及相应的操作行为。从美式咖啡的兑水稀释，到冰手冲的冰块融化，再到赛事选手和日常冲煮中的浓度调整，By pass无处不在。前街将通过多个实例，带你全面了解旁路水的主动与被动生成、它在萃取中的角色，以及它作为补救手段的适用前提，帮助你更准确地运用这一技巧。 [more…]

在咖啡冲煮领域，By Pass（旁路）是一个实践频率远高于其理论讨论度的概念。不少爱好者将其简单等同于往冲煮完成的咖啡中兑水稀释，但这一理解是否准确？本文将从By Pass的字面含义出发，结合金杯准则中萃取率与浓度的关系，系统阐释旁路手法的底层逻辑。同时引入金泽式冲煮作为参照，分析如何利用1:13粉水比配合2倍粉量的旁路水来优化浅烘咖啡的酸质与干净度，并探讨研磨度、水温等参数的调整空间。 [more…]

在手冲咖啡出品时，不少人见过咖啡师冲完后往壶里再倒水的操作，这其实叫作by pass（旁路）。本文从前街的视角出发，系统讲解by pass的原理、常见应用场景以及应急补救方法，包括美式与冰手冲的旁路思路，以及遇到尾段积水、浓度过高或过萃时如何用少量旁路水进行挽救。同时也会说明旁路水的温度选择与添加技巧，帮助你理解这一手法背后的逻辑，并指出与其依赖事后兑水，不如找到冲煮问题的根源。 [more…]

在手冲咖啡的世界里，除了常规的萃取路径，还有一种被称为「旁路」（By pass）的操作——让热水绕开咖啡粉直接落入下壶，与已萃取的咖啡液混合。这种做法看似简单，却能有效稀释过高浓度的咖啡，让风味层次得以舒展。前街咖啡在日常冲煮中经常运用这一技巧，例如当一壶分界线的希爪因冲煮不当而酸味过于集中时，注入少量80°C热水便能释放出葡萄、百香果和柑橘类的水果调性。除了调节浓度，By pass还广泛应用于冰咖啡制作、拯救细粉堵塞导致的过萃咖啡，甚至出现在专业咖啡赛场上。但需要注意的是，它并非万能，面对严重过萃或萃取不足的咖啡，旁路注水也无能为力。本文将系统解析By pass的原理、适用场景与操作要点，帮助你更灵活地掌控咖啡风味。 [more…]

刚入门手冲的朋友多半遇到过这样的尴尬：一不小心把咖啡冲得又浓又苦，喝起来刺激感十足。直接倒掉太可惜，于是很多人想到往里面加点水来稀释。这种操作在咖啡圈里其实有个正式名字——By pass，中文常译为"旁路"。简单来说，就是让一部分热水绕过咖啡粉层，不参与萃取，直接进入下壶或杯中。听起来简单，但什么时候该用、加多少水、水温怎么选，都有讲究。本文将从原理到实操，结合前街咖啡的冲煮经验，帮你搞懂By pass到底该怎么用，以及它为什么救不了严重过萃的咖啡。 [more…]

As in various other industries, there are quite a few professional terms in coffee as well. We can understand so-called professional terms as a condensed expression of complex concepts. They can not only improve the efficiency of our communication, but also increase the precision of communication and reduce the chance of communication barriers arising. However, because most [more…]

在咖啡圈里，往冲好的咖啡液里直接加水有一个专门的叫法——By pass（旁路）。这个操作绕开了咖啡粉，不参与萃取，只用来调节最终杯中的浓度。不少人好奇：加水真的能让咖啡变好喝吗？答案要分情况——如果咖啡本身又苦又涩，加再多水也救不回来；但如果这杯咖啡萃取得当、只是浓度太高导致风味被压制，那么适量加水反而能让它恢复本该有的美味。本文从前街的视角出发，结合浓缩咖啡制作美式、手冲调整浓度等实例，解释背后的感官原理与实操判断方法。 [more…]

你见过用盖子“闷”咖啡的冲煮方式吗？这并不是玩笑，而是源自日本、诞生于1962年的「松屋式冲煮」。它用锅盖实现真正的闷蒸，配合超高注水与超浓粉水比，再通过By pass稀释还原风味。这套方法的核心追求是“稳定”：让刚烘焙的豆子和放置一周后的豆子，都能在闷蒸阶段把气体排尽，从而避免排气差异带来的萃取波动。本文将从发明背景、设计逻辑到具体参数完整拆解松屋式冲煮，并以深烘焙苏门答腊·黄金曼特宁为例，给出前街的实操步骤与品鉴感受，带你体验这款经典日式冲煮的独特魅力。 [more…]

"Excuse me, what grind size should I use for pour-over coffee?" "Why is the grind at setting 10 on your machine different from setting 10 on mine?" "When you say 'sugar-like,' do you mean caster sugar, granulated sugar, or brown sugar?" ... Are you still struggling to find the right grind size for your coffee brewing device? Front Street has an article to [more…]

在手冲咖啡的世界里，调整浓度看似简单——想浓就少加水，想淡就多加水。然而，当粉水比例的变动超出合理范围时，萃取率也会随之改变，进而影响咖啡的整体风味。本文以前街常用的1:15粉水比方案为例，详细解析如何在调整浓度的同时，通过水温、研磨度等参数的协同配合，避免萃取不足或过度萃取。此外，还介绍了通过兑水（By pass）稀释浓度的简便方法，并提醒了操作时的注意事项。无论你是追求浓郁口感还是清淡风味，这些实用技巧都能帮助你更精准地掌控每一杯咖啡。 [more…]

Among the parameters of pour-over coffee, Front Street believes that grind size is the hardest to master. It doesn't have intuitive data like water temperature or coffee-to-water ratio, nor can it be compensated for through practice like technique. As a result, many beginners are stumped by grind size. So Front Street will teach you how to get grind size right. First, I [more…]

Many friends just starting out always face the trouble of over-extraction! So-called "over-extraction" refers to excessive extraction. In a coffee bean, the substances that can be dissolved out by water make up about 30% of the total. Although there is only this much, we cannot dissolve everything out. Because inside, besides [more…]

If you are a passionate lover of pour-over coffee, then you must know that the following factors are among the reasons that affect your coffee's extraction and flavor! So let's count them with Front Street: water temperature, grind size, coffee-to-water ratio, extraction time... Front Street Coffee (FrontStreet [more…]

咖啡太苦怎么办？有人提出加盐可以改善口感。本文通过曼特宁咖啡的对照实验，测试了0.01g、0.02g、0.03g三种不同盐量对咖啡风味的影响。结果显示，0.02g的盐量能让苦味与咸味达到平衡，提升醇厚度且易于入口；而0.01g仍带刺激性，0.03g则咸味过重。实验表明，加盐确实能一定程度掩盖苦涩，但与By pass手法类似，主要适用于拯救萃取失误或即将翻车的咖啡。若咖啡本身萃取完美、酸甜均衡，额外加盐反而会破坏风味平衡，人为制造负面味道。 [more…]

手冲咖啡的浓淡口感，最直接的调节方式就是粉水比例。想喝浓郁一点，减少注水量；偏爱清爽些，增加注水量即可。但改变粉水比不仅影响浓度，还会牵动萃取率的变化。前街建议的参数范围内，1:15至1:16能适应大多数咖啡豆：1:15口感扎实、风味饱满；1:16则清爽丰富。若深烘焙豆想冲浓，直接跳到1:13可能导致萃取不足、余韵缺失，这时就需要研磨度与水温来辅助。本文将系统梳理浓度调整的多种思路，包括粉水比、研磨粗细、水温变化以及By Pass手法，帮助你在不同烘焙度下找到平衡点。 [more…]

For more specialty coffee knowledge, please follow our WeChat official account: Front Street Coffee (FrontStreet Coffee). No matter what equipment is used to brew coffee, the coffee beans need to be ground, and the purpose of this is to allow the coffee's flavor substances to dissolve more quickly. Of course, not all of the coffee's soluble [more…]

There are many factors that affect the taste of coffee. During the brewing process, the factors that influence coffee include the coffee-to-water ratio, grind size, water temperature, etc. Among them, grind size can be said to be extremely important. There is a saying in the industry: "You can buy a cheaper coffee machine, but the grinder must be the best." It must be said that grinding really has an [more…]

For more specialty coffee knowledge, follow our WeChat public account: FrontStreet Coffee (FrontStreet Coffee) No matter what equipment is used to brew coffee, the coffee beans must be ground, the purpose being to allow the coffee's flavor compounds to dissolve more quickly. Of course, not all of the coffee's soluble [more…]

爱乐压凭借极高的可玩性，吸引着众多咖啡爱好者投身其中，官方每年还会举办专属赛事来比拼谁最会“玩”。本文前街要分享的是一套来自爱乐压冠军选手的万能萃取方案——这位冠军正是2016年世界咖啡赛冠军、知名四六冲的发明者粕谷哲。这套方案采用高浓低萃思路，以大粉量在短时间内萃取出少量高浓度咖啡液，再通过加水或冰块稀释，制成热饮或冰饮。前街以埃塞·哈马修中浅烘焙花果香豆为例，详细记录了粉量、研磨度、水温、萃取时间与反压操作步骤，并给出by pass稀释建议与风味品鉴参考，家里有爱乐压的朋友非常值得一试。 [more…]

Front Street Coffee has found that many friends are troubled by the problem of Moka pot coffee often being over-extracted. Every time Front Street Coffee shares a tweet related to the Moka pot, friends leave comments like: "How can I avoid over-extraction in Moka pot coffee?" or "Why is the extracted coffee so bitter?" Indeed, compared to its [more…]