Introduction:Want to easily make an espresso latte at home that rivals those from coffee shops? This article provides an in-depth breakdown of the core steps in making a latte, including espresso extraction parameters, milk selection, and milk frothing techniques, along with practical ratio formulas for both hot and iced lattes. Whether you're a beginner or looking to refine your skills, you'll master the key techniques to create a classic latte with balanced flavor and rich layers.

The espresso latte is a classic coffee beverage that perfectly blends espresso with milk, and it's also one of the most common milk-based coffees found in coffee shops around the world. To replicate a professional-grade latte at home, it's not only important to understand the basic recipe but also to master the precise parameters of espresso extraction, milk selection, and milk frothing techniques. The following will step-by-step deconstruct the latte-making process—from bean selection and extraction to latte art—so you can enjoy a rich and smooth latte at home.

The term "latte" comes from the Italian word "Latte," which means milk. This coffee is essentially an espresso base combined with a suitable proportion of milk, allowing the originally strong and slightly bitter coffee to present a smoother and sweeter taste through the gentle tempering of milk. Even those who don’t usually drink coffee can easily be drawn in by this soft and balanced flavor.

The history of the espresso latte can be traced back to 17th-century Vienna. It is said that after the Austrians repelled the Turkish army, they discovered a large amount of leftover coffee beans and used them as the foundation to establish the first coffeehouse. To cater to European drinking habits, the shop added milk to the espresso, unexpectedly creating a more popular flavor. From then on, the combination of milk and coffee gradually gained global popularity and evolved into what we now know as the latte.

Choosing the right coffee beans and milk is the first step to success

The ingredients for a latte may seem simple—just espresso and milk—but the choice of these two directly impacts the final flavor. It’s recommended to use a stable espresso blend, which typically combines beans from different regions and is primarily medium to dark roasted. Such blends not only easily extract rich crema but also enhance the overall performance of the milk coffee. Blends generally offer better cost-performance and are easier for beginners to handle. It’s generally advised to choose a blend suitable for espresso extraction, such as a combination of Brazilian and Mandheling beans, and to add a small amount of Robusta if needed to boost intensity and crema.

It’s worth noting that freshly roasted coffee beans may release a large amount of carbon dioxide after grinding, forming coarse foam that can affect extraction flavor. It’s recommended to let the beans rest for 7–10 days after roasting to stabilize their flavor before use, and to consume them within 45 days for optimal flavor performance.

Hot Latte: Extraction and Milk Frothing Techniques

When making a hot latte, the espresso extraction parameters are particularly important. It’s generally recommended to use a double-shot portafilter, adding about 20 grams of coffee grounds and extracting 40 grams of espresso at a 1:2 coffee-to-water ratio. The extraction time should be controlled between 20–35 seconds, with 28–30 seconds being the optimal range to balance flavor and strength. Too short a time may result in under-extraction and a weak flavor, while too long can lead to over-extraction and a burnt, bitter taste.

Before starting the extraction, it’s advisable to dry the portafilter and evenly distribute and tamp the ground coffee to ensure stable extraction. Before extraction begins, run water for 1–2 seconds to clean the brew head. During extraction, it’s recommended to use an electronic scale to monitor the weight and time of the coffee liquid to ensure accurate parameters.

Next comes the milk frothing, which is key to achieving a smooth and layered latte. It’s recommended to use the steam wand of an espresso machine, pouring about 240 milliliters of milk into the pitcher (suitable for a 300-milliliter cup). Before frothing, purge the steam wand to remove any residual moisture. The frothing process is divided into two stages: first, create fine microfoam during the "paper-tearing sound stage," where the steam wand should be close to the milk surface; then submerge the wand deeper into the milk for "stretching," allowing the milk to uniformly rotate and expand. The final milk foam should be about 1 centimeter thick, with a smooth surface free of large bubbles and good fluidity.

Finally, there’s the blending and latte art. Slowly pour the frothed milk into the espresso, starting from a slightly higher position to blend, then gradually lower the pitcher to use the buoyancy of the milk foam to create patterns, and finish by lifting and pushing to complete a simple heart shape or other basic latte art designs.

Simple Method and Ratio Suggestions for Iced Lattes

Compared to hot lattes, iced lattes have a simpler preparation process, making them ideal for those who prefer a refreshing taste. The basic method is to first add about 100 grams of ice cubes to a cup, then pour in 180 grams of milk, and finally add the extracted espresso (about 30–40 grams) and gently stir to combine.

Since different coffee beans may vary in extraction flavor and milk brands can also affect the final taste, there is no absolute standard ratio for iced lattes—the general range is 1:4 to 1:8. If using dark-roasted beans with flavors of dark chocolate or nuts, you can appropriately increase the milk ratio to 1:6 to balance the intense flavor; if using light-roasted beans with prominent fruity acidity, it’s recommended to reduce the milk ratio to 1:4–1:5 to preserve more of the coffee’s original aroma.

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