Introduction:Want to understand the differences between Flat White, Flat White-style coffee, and Latte? This article will comprehensively analyze the distinctions among these three classic milk coffees—from their historical origins, recipe ratios, to flavor details. From the choice of double espresso, milk foam thickness, to the common 1:5 milk ratio, it not only clears up misconceptions but also provides practical brewing references, helping you order or make your next cup more accurately.

Both use espresso and milk, so why does Flat White stand out on its own? Its creation actually stems from a fusion of immigrant culture and local drinking preferences. From the post-WWII establishment of Italian cafes in Australia to local consumers complaining that traditional lattes had “too much foam and too weak a coffee flavor,” a more concentrated milk coffee—Flat White—was born. This article not only introduces its historical background but also compares its key differences with Latte and Flat White-style coffee in detail, and explains the common 1:5 milk-to-espresso ratio, so you can grasp the essence of this classic milk coffee all at once.

Italians’ talent for innovating fancy coffee drinks is well known—whether it’s pouring espresso over ice cream or adjusting the ratio of coffee to milk to create new flavors. Flat White is also such a product. But many assume it’s an original Australian or New Zealand creation, when in fact, it’s the result of a cross-cultural evolution.

Long before WWII, Australia and New Zealand were mainly colonies of British and Irish immigrants. Though locals had the habit of drinking coffee, it was mostly simple home-brewed versions, mainly divided into Black Coffee (black coffee) and White Coffee (coffee with milk). Back then, White Coffee was just black coffee with hot milk added, turning the color lighter—similar to the prototype of today’s latte, but completely different from modern espresso-based coffee.

After the war, Italy, having suffered greatly, saw many northern residents (where industrialization was earlier) migrate to places like Latin America and Australia, bringing Italian coffee culture along. However, this coffee wasn’t immediately accepted and had to go through market “re-education”—just as the American market helped give rise to “Americano,” Australian consumers gradually developed their own preferences.

Australian customers wanted coffee with a stronger flavor but didn’t want a mouthful of thick foam in every sip, which was very different from the Italian tradition of drinking lattes or cappuccinos. To meet this demand, baristas adjusted the recipe: reducing the amount of milk while making the foam thinner. Since the thinner foam couldn’t be stacked as high as before, it had to be level with the rim of the cup, hence the name “Flat White”—“Flat” meaning flat, and “White” representing the addition of milk.

Over time, the second generation of local baristas and shop owners began to further shape the uniqueness of Flat White. Many shops would specifically choose single-origin beans for this coffee, or use blends different from those in regular lattes, to enhance the expression of the coffee’s own flavors rather than letting them be overshadowed by milk.

Besides bean selection, some shops also made changes to the espresso base. Traditionally, a single shot of espresso was used, but some shops opted to extract only the middle-to-front part of the espresso (i.e., Ristretto) to increase intensity, as this part has lower acidity, more pronounced sweetness and body, and higher concentration. But Ristretto yields less volume, so a common practice is to use “Double Ristretto”—that is, extracting two consecutive Ristrettos, totaling about 30 grams, similar in volume to one standard espresso shot, but with a more concentrated flavor.

It’s worth noting that using Double Ristretto isn’t an absolute standard—many professional shops still choose traditional espresso based on customer feedback or their own flavor preferences. But if you want to enhance the coffee’s expression, Double Ristretto is currently the more common choice and has become one of the distinguishing factors between Flat White and Latte.

Currently, the common parameters for making Flat White in the industry are: using about 30 grams of Double Ristretto as the base, and adding milk at a ratio of about 1:5—that is, around 150 milliliters—with the milk foam being thin and fine. Poured into a cup of about 200 milliliters, the coffee, milk, and minimal foam combine, with the overall liquid level sitting level with the rim, presenting a refreshing yet full-bodied visual and textural experience. This kind of)

ratio allows the aroma and body of the coffee to be more pronounced, while maintaining the smooth and silky feel of the milk—a very classic and balanced combination.

If you’ve ever wondered: “I just want to know the coffee-to-milk ratio of a Flat White, why do I need to hear all this history?”—understanding this background is precisely what helps you grasp the details and differences of each cup of coffee more accurately. Whether you’re ordering at a cafe or planning to recreate this classic at home, knowing its historical evolution, recipe logic, and common parameters can help you make a more flavorful choice.

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