Introduction:Want to know which coffee beans are best suited for making espresso? What’s the difference in milk ratios between a Flat White and a latte? This article delves into the formula differences between these two classic coffee drinks, the choice of espresso base, and the key parameters to pay attention to during preparation — helping coffee enthusiasts precisely master flavor balance and practical techniques.
The Base Logic of Espresso and Milk-Based Coffees
Whether it’s a Flat White or a latte, the core always revolves around a high-quality espresso base. However, there are significant differences in the amount of espresso used, milk ratio, and foam thickness.A Flat White typically uses a single or double ristretto shot (30g extraction), paired with less milk (around 190ml) and an ultra-thin layer of foam (about 0.5cm).In contrast, a latte uses a double shot (40g extraction), more milk (around 260ml), and slightly thicker foam (about 1cm). These details directly affect the final flavor presentation.
The Origin and Characteristics of Flat White
Although often associated with Australia or New Zealand, the exact origin of the Flat White remains debated. New Zealand baristas prefer using a double ristretto (Double Ristretto) for a stronger coffee intensity, while the Australian version usually opts for a single shot (Single Espresso) and insists on serving it only hot — adding ice dilutes the concentration and ruins the rich texture that a Flat White should have.Its core characteristics are a more prominent coffee flavor, less milk, and noticeably thinner foam compared to a latte..
The Essence and Evolution of Latte
The word “latte” comes from the Italian word for “milk,” and it is essentially a combination of milk and espresso. The modern latte took shape thanks to the popularization of espresso machines, especially the advancement of steam wand milk heating technology. In the 1980s, American baristas introduced latte art, further enriching its visual appeal.In actual preparation, the proportions of milk to espresso, coffee bean selection, and extraction parameters may vary from shop to shop, but the core logic of diluting the espresso with a large amount of milk remains unchanged.Flavor differences mainly come from bean variety, type of milk, and variations in ratio.
Practical Distinctions Between Flat White and Latte
Taking common serving standards as an example:A latte is served in a 300ml ceramic cup, with a 40g espresso base, 260ml of milk + foam (foam thickness about 1cm).；A Flat White is served in a 220ml glass cup, requiring only 30g of espresso and 190ml of milk + foam (foam thickness about 0.5cm).Visually, the latte has thicker foam that slightly rises, while the Flat White appears flatter; in terms of flavor, the latte has a richer milk taste, whereas the Flat White highlights a more distinct coffee flavor. Locally in Australia, it’s even jokingly said that “a latte is coffee-flavored milk, while a Flat White is milk-flavored coffee.”
Key Parameters for Espresso
To make high-quality espresso, machine parameters must be strictly controlled:Pressure at 9 bar, temperature at 90.5~96°C, extraction time of 25~33 seconds, and a coffee-to-water ratio of 1:1.7~1:2.A single shot uses about 12g of coffee (extracting 20ml), and a double shot about 20g (extracting 40ml). These values directly impact the coffee’s concentration, crema quality, and flavor layers, and should be fine-tuned based on the roast level of the beans.
Milk Handling and Flavor Balance
When making a Flat White or latte, milk temperature should be kept between 50-60°C — too low fails to bring out the sweetness of lactose, while too high can damage proteins, resulting in a grainy texture.Flat White foam is about 5mm thick (flat), latte foam is about 1cm thick (slightly raised), and cappuccino requires 1.5cm thick foam.Whole fresh milk is the top choice because its fat content enhances smoothness and sweetness, creating a more harmonious balance with espresso.
Logic Behind Choosing Espresso Blends
Espresso-specific coffee beans are usually multi-origin blends, aiming to combine the strengths of different bean varieties, stabilize flavors, and enhance body.Beans roasted too lightly have pronounced acidity and are unsuitable for high-pressure espresso extraction; overly dark roasts may mask complexity, leaving only burnt bitterness.An ideal blend should balance sweetness, nutty/chocolatey notes, and moderate acidity, ensuring harmony when paired with milk.
Flavor Profiles of Common Blends
Mainstream market blends often combine beans from Brazil, Colombia, and other regions, with some adding a small portion of Robusta to boost crema. For example, the “Sunflower Warm Sun” blend (70% Honduras Sherry + 30% Ethiopia Yirgacheffe Red Cherry) highlights chocolate and caramel flavors with a hint of wine-like aroma; the “Premium Blend” (30% Colombia + 70% Brazil) offers nutty notes and mild acidity, suitable for consumers who prefer balanced flavors.Different blends suit different coffee types — lattes can go with bold blends, while Flat Whites pair better with combinations that have a balanced sweet and acidic profile.。
The above content is compiled by CoffeeHunters, a coffee news website.
