Introduction:Want to know the true origins of Starbucks’ Flat White and how it relates to the Flat White vs. Latte debate? This article takes an in-depth look at this classic milk coffee originating from the Southern Hemisphere, explains the difference between a ristretto and a regular espresso shot, and shares practical coffee-to-milk ratios, milk foam thickness, and temperature control techniques to help you understand and craft a richly balanced Flat White from the ground up.

Flat White, a classic coffee found in cafés around the world, is immensely popular despite ongoing debates about its true birthplace. Whether you side with the Australian or New Zealand camp, there’s no denying the allure of this drink: built on a ristretto base and topped with a thin layer of microfoam, it delivers intense coffee flavor while maintaining a silky smooth mouthfeel. This article starts with its historical background, traces its evolution globally, and dives deep into the differences between a ristretto and a standard espresso, breaking down its key brewing elements.

When it comes to Starbucks’ Flat White, many coffee enthusiasts are no strangers. This internationally known drink under the name Flat White wasn’t widely recognized in the Taiwan and China markets until Starbucks added it to their official menu and gave it the Chinese name “馥芮白” (Fùruìbái). It gradually became one of the daily go-to coffee choices for many. Its appeal lies not just in the name but in the rich and balanced taste experience.

As for the origins of the Flat White, both Australia and New Zealand claim to be its birthplace. Though there’s still no definitive answer, what is certain is that this coffee emerged from the pursuit of a premium coffee experience. Prior to the 1970s, most cafés in Australia served mostly French press and drip coffee. It wasn’t until the introduction of espresso machines that the modern era of espresso began. Compared to lattes and cappuccinos, Australian consumers favored versions with less milk foam and more prominent coffee flavor, leading to the development of a style with extremely thin foam almost level with the rim of the cup — hence the name Flat White, where “Flat” refers to the flat surface and “White” denotes the addition of milk.

This style was officially added to the regular menus of Australian cafés in the 1980s and later spread to international markets. Its popularity among Chinese-speaking communities is largely thanks to Starbucks’ introduction in 2015, making it often the first step into the world of espresso-based drinks for many beginners.

At its core, the Flat White is a drink where coffee takes center stage, with milk serving to complement rather than overpower the coffee aroma. As a result, the coffee flavor is more pronounced, and because it uses an extremely thin layer of foam, each sip offers a blend of espresso and delicate bubbles. Additionally, its serving size is typically smaller, around 160 to 200 milliliters, allowing the aroma and temperature of the coffee to be enjoyed at their best.

Speaking of making a Flat White, one cannot overlook the ristretto. This term, originating from Italy, means “restricted” and refers to an espresso extracted only from the first and middle parts of the shot. Compared to a standard espresso, it has a shorter extraction time, less liquid, but a more concentrated and intense flavor. Generally, a ristretto uses the same amount of coffee grounds (e.g., 20 grams), but only extracts around 27 grams of coffee, within a time frame of 20 to 25 seconds — stopping earlier than a standard espresso to retain more acidity, sweetness, and complex aromas such as berries, caramel, and even subtle hints of wine.

In practice, many professional baristas choose to use a double ristretto as the base for a Flat White to enhance the coffee expression. For example, extracting 54 grams of coffee from 40 grams of coffee grounds (double shot), paired with approximately 150 milliliters of fresh milk, achieves the golden ratio of 1:5. This not only preserves the essence of the espresso but also balances the sweetness of the milk with the depth of the coffee.

When it comes to milk foam, the Flat White emphasizes a “thin yet velvety” texture, with the ideal foam thickness being only about 0.3 centimeters. This requires minimizing air incorporation during steaming to maintain a smooth and silky milk texture. Temperature control is also crucial — it’s recommended to heat the milk to 55 to 60 degrees Celsius, which fully releases sweetness without compromising the overall flavor profile by becoming too hot.

All in all, an outstanding Flat White should deliver intense yet smooth coffee flavor, delicate and silky milk foam, along with good sweetness and aftertaste. When these elements are in harmony, they create a velvety-smooth, aromatic, and long-lasting drinking experience. From its origins to its techniques, this coffee is not just a choice — it’s a matter of taste.

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