Introduction:Espresso-based coffee is the cornerstone of modern coffee culture. From espresso, we derive drinks such as Americano, latte, and cappuccino, each with its own unique ratio and flavor profile. This article delves into the origins, ingredient ratios, and extraction techniques of six classic espresso beverages, helping you understand the composition and tasting essentials of each cup, starting from the espresso base.

With the rise of specialty coffee trends, consumers are no longer content with just drinking coffee—they want to understand the production logic and flavor characteristics behind their beverages. The espresso-based system centers around espresso as the core foundation. By adjusting extraction parameters and pairing with different accompaniments, it gives rise to a variety of drinks such as Americano, latte, flat white, cappuccino, and mocha. This article will start with basic definitions, then break down the characteristics, historical origins, and ideal flavors of these six classic coffees one by one. Combined with practical extraction parameters, it will give you a more comprehensive grasp of each coffee’s composition and appreciation techniques.

In today’s era of increasingly widespread specialty coffee shops, consumer expectations for coffee quality are higher than ever. Do you really know what type of coffee you’re drinking every day, or how it’s made? Next, we’ll start with the most fundamental espresso and take you into the mysteries of six classic espresso-based drinks.

What is espresso?

Espresso is a small, concentrated shot of coffee produced using a specialized espresso machine. Under high pressure (typically 9 to 10 bar) and high temperature, hot water rapidly passes through finely ground coffee beans to extract a thick, rich, and full-bodied coffee liquid. A standard shot of espresso should have a layer of fine, golden-brown crema on top. It offers a balanced taste with acidity, sweetness, bitterness, and body in harmony, along with concentrated aroma and a clean aftertaste.

A well-made espresso is often a key indicator of a coffee shop’s quality. For example, at a certain well-known branch, they use 20 grams of coffee grounds, extract 40 grams of coffee liquid within 25 to 30 seconds at a 1:2 coffee-to-water ratio, maintaining a pressure of 9 to 10 bar. If under-extracted, the flavor may be weak and lack complexity; if over-extracted, it can easily result in sharp bitterness that’s hard to fix even by diluting with water. It’s recommended to adjust grind size, coffee dosage, and extraction time according to actual flavor performance to achieve balance.

Americano: Espresso plus water—simple but refined

The Americano is the most basic espresso-derived drink, made by mixing espresso with hot water without adding milk or other ingredients. Legend has it that this beverage originated during World War II when American soldiers found espresso too strong, so they diluted it with water, eventually evolving into the common form of black coffee.

Currently, there is no universal ratio of espresso to water, but based on practical experience, a 1:6 ratio (such as 40 grams of espresso to 240 grams of 88°C hot water) can deliver better flavor balance. For iced Americano, it’s recommended to use 120 grams of ice with 120 grams of room-temperature water, then pour in hot espresso. Drinking before the ice melts preserves the optimal flavor. Hot Americano often features notes of roasted nuts, chocolate, and tropical fruit with a hint of fermentation acidity, and a vanilla-like finish. Iced Americano highlights more whiskey-like aromas and berry tones, making it suitable for those who prefer a refreshing taste.

Latte: The perfect balance of milk and coffee

The word "latte" comes from the Italian word for "milk." This specialty coffee uses espresso as the base, paired with hot milk and a small amount of milk foam as decoration. The earliest prototype of latte can be traced back to 17th-century Vienna, where to cater to European tastes, the coffee grounds were filtered out of Turkish coffee, and a large amount of milk was added to create the smooth and sweet flavor we know today.

The ratio of espresso to milk in a latte is quite flexible, commonly ranging from 1:5 to 1:8, with a practical ratio of 1:6 (40 grams of espresso to 240 grams of milk). When making it, pour the espresso into a preheated cup first, then steam the milk with the coffee machine’s steam wand to 55–65°C to form fine and moderately thick foam. Finally, combine it evenly with the coffee liquid, and latte art adds a visual touch. Hot lattes have a silky-smooth texture, often featuring notes of liqueur-like chocolate and creamy body. Iced lattes are best made by adding ice and some milk first, then pouring the espresso. Stirring well before drinking ensures a full flavor experience.

Flat White: A more coffee-forward Australian innovation

Flat White, also known as “Australian white” or “flat white,” originated in Australia and is a variation of hot latte with adjusted proportions and techniques. The main difference lies in the use of ristretto (a restricted extraction of the middle-to-front part of the shot), a smaller cup size, and thinner milk foam.

To enhance the coffee flavor, Flat White uses about 30 grams of double ristretto, poured into a 200 ml cup, then combined with 150 ml of hot milk at a 1:5 ratio. The milk foam is thinner, allowing the coffee flavor to stand out more. Compared to latte, Flat White has a thinner layer of foam and an overall more concentrated taste, making it ideal for those who prefer a prominent coffee base.

Cappuccino: The classic combination of milk foam and coffee

Cappuccino consists of espresso, hot milk, and thick milk foam, traditionally in a 1:1:1 ratio, though modern methods often adjust these to avoid being overly intense. Its defining feature is the top layer of fine, thick foam, delivering a velvety texture and soft mouthfeel.

When making it, a double shot of espresso is usually used as the base, with 150 ml of milk steamed into thick foam, then poured into a small cup of about 180 ml to achieve a full-cup effect. This coffee emphasizes the fineness and integration of the milk foam and is a classic choice for many coffee enthusiasts to experience the texture of foam.

Mocha: A sweet encounter of coffee and chocolate

Mocha is named after the famous coffee port city of Mocha. It combines espresso with chocolate flavor, making it a sweet-style specialty coffee. The common method involves adding chocolate syrup, powder, or chunks to the espresso, then pouring in hot milk and creating latte art, often finishing with a sprinkle of cocoa powder for extra aroma.

Hot mocha typically includes 15 grams of chocolate syrup, mixed thoroughly with the espresso, followed by hot milk and latte art. Iced mocha is based on iced latte, with chocolate syrup blended in. This coffee is ideal for those who enjoy sweet and chocolatey flavors and makes for a comforting choice in winter or the afternoon.

In summary, the charm of espresso-based coffee lies in its versatility and precision. Starting from the espresso base, varying ratios and techniques can yield a myriad of flavor expressions. Mastering the characteristics and key techniques of these six classic coffees not only enhances your drinking experience but also deepens your understanding of the fascinating world of coffee.

The above content is compiled by CoffeeHunters, a coffee news website.