Introduction:Want to understand the differences between a Flat White and a latte? This article dives deep into the origins of the Flat White, the golden ratio of espresso to milk, and shares professional barista techniques such as ristretto extraction and milk frothing methods. From historical background to practical parameters, it helps you master the essence of this delicate milk coffee.
Within the family of espresso-based drinks, adjusting the ratio of espresso to milk can produce a variety of flavor profiles, and the Flat White is one of its classic representatives. Originating in Australia and New Zealand, this milk coffee is characterized by its rich coffee aroma paired with a fine layer of microfoam, making it a daily favorite for many coffee enthusiasts. What makes its preparation parameters unique? Let’s break it down from its historical evolution to practical execution.
Italians’ innovation in the realm of specialty coffee is undisputed—from creative drinks like pouring espresso over ice cream to developing new products by adjusting the coffee-to-milk ratio, all showcasing their flexibility. The Flat White was born through precise control of the golden ratio between these two key elements, but the story behind it is actually more intriguing than it seems.
Many assume the Flat White is an Australian original invention, but it’s actually closely tied to immigration waves in the mid-20th century. During that time, a large number of immigrants from northern Italy brought their homeland’s espresso culture to Australia. These migrants, hailing from the more industrialized northern regions of Italy, not only introduced traditional Italian coffee techniques but also gradually adapted recipes to local tastes. After World War II, with Europe’s economic downturn, many Italians migrated to Latin America and Australia in search of opportunities, inadvertently spurring the localization of coffee culture.
The early coffee habits of Australian immigrants were relatively simple, with basic drink choices consisting of black coffee (Black Coffee) for home consumption and white coffee (White Coffee) with milk. When Italian-style coffee shops entered the local market, they adjusted their offerings to better suit Australian preferences—reducing the thickness of the milk foam and the amount of milk, thereby creating a new item called ‘Flat White.’ The name intuitively reflects its characteristics: ‘Flat’ indicates a smooth, non-peaked coffee surface, while ‘White’ symbolizes the addition of milk.
Modern cafés often enhance the uniqueness of the Flat White through bean selection and extraction techniques. Many shops specifically choose single-origin beans for their Flat Whites or use blending methods different from traditional blends to highlight the coffee’s inherent flavor layers. For the espresso base, some professional baristas opt for a more concentrated ristretto extraction (using only the first, richer part of the espresso shot), or even double ristretto, to intensify the coffee’s expression. It’s worth noting, however, that this isn’t an absolute standard—adjustments should ultimately be made based on the beans’ characteristics and customer preferences.
Common practical parameters for reference: using about 30 grams of double ristretto extraction liquid, paired with a 1:5 milk ratio (approximately 150 milliliters), with the milk foam thickness kept at an extremely thin level. It’s recommended to serve in a 200-milliliter cup, so that the combination of espresso, milk, and a trace amount of microfoam aligns perfectly with the rim. Beginners should pay special attention to keeping the milk temperature between 55–60°C—too high can destroy delicate flavors, while too low affects texture and fluidity. Additionally, stable steam frothing technique is crucial for maintaining uniform microfoam consistency.
The above content is compiled by CoffeeHunters, a coffee news website.
