Introduction:As a popular coffee beverage in recent years, how does a Flat White differ from a latte? From milk foam thickness, coffee ratio to the types of beans suited for it, this article delves into the key differences between the two and explains how the Flat White better highlights the flavor characteristics of single-origin coffee. It also provides beverage selection advice for those looking to lose weight, explores whether a Flat White can be served cold, and recommends similar-flavored iced coffee alternatives.

Beyond the classic latte and cappuccino, the Flat White has become a popular choice in coffee shops around the world. In Taiwan and Hong Kong, it is often referred to as "Chun Yi Bai," "Ao Rui Bai," "Xiao Bai," or simply "Ao Bai." Originating from Australia and New Zealand, this coffee emphasizes the flavor of the coffee itself with a thinner layer of milk foam, a higher proportion of coffee, and a relatively smaller cup size. This article will provide a detailed comparison of the Flat White and latte in terms of milk foam thickness, cup size, and brewing methods, and explain why it can better showcase the unique flavors of single-origin (SOE) coffee. Additionally, we will share practical parameters and flavor characteristics for making a Flat White, answer common questions such as whether to choose Ao Bai or latte during a diet, and whether a Flat White is suitable as an iced drink.

If you want a drink that combines milk and coffee, in Italy you’d typically go for a latte, but in Australia, many customers order a Flat White — locally, this type of coffee is simply called a Flat White. This beverage can be traced back to the 1980s, when Italian immigrants brought espresso machines to Australia, New Zealand, and Melbourne. Local consumers gradually developed a preference for a stronger coffee flavor and finer, thinner milk foam, leading to the creation of the Flat White. It later spread to European and American markets and became a staple on the menus of many coffee shops.

The name "Flat White" comes from the unique appearance of its milk foam — when the steamed milk produces an extremely fine and thin layer of foam, it ends up almost level with the coffee, creating a "flat" (Flat) white (White) surface, hence the name. This design puts the coffee in the spotlight, with milk serving only as a complement, making the coffee flavor more robust and intense. The thin layer of milk foam allows each sip to feel like delicate velvet-like bubbles, paired with a moderate temperature and smaller cup size, letting you enjoy the full cup before the foam separates.

In New Zealand, baristas usually use a smaller cup size when making a Flat White, keeping the coffee ratio the same but reducing the amount of milk, which makes the proportion of coffee higher and the flavor naturally more concentrated. In contrast, Australian baristas tend to maintain a cup size similar to that of a latte but control the milk foam to be thinner, generally around 0.3–0.5 centimeters. Some Melbourne baristas even opt for a double ristretto, using only the first and middle parts of the extraction, and then blend it into a 150 ml cup with milk foam of a similar thickness to a latte, creating a more distinctive Flat White flavor.

An outstanding Flat White often represents higher demands on coffee quality. In the past, many coffee shops preferred to use dark-roasted espresso blends, achieving flavor balance through rich roasted aromas and the sweetness of milk. However, with the rise of the specialty coffee concept, more and more consumers are pursuing the unique flavors showcased by single-origin coffee beans, also known as SOE (Single Origin Espresso). Compared to large lattes or cappuccinos with thick milk foam, a Flat White not only requires high-quality coffee beans and precise extraction techniques, but also needs to be paired with fine and dense thin-layered milk foam to fully present the origin characteristics of the coffee beans.

Practical Brewing Example: If using the "Sunflower Warm Sun Blend" — composed of 70% Honduran Sherry-flavored beans and 30% Yirgacheffe sun-dried red cherry beans — it can bring out complex layers of whiskey aroma, vanilla, cream, and tropical fruits. The coffee base is recommended to use a double ristretto, extracting 30 grams of coffee liquid with 20 grams of coffee powder, with an extraction time controlled at 22–24 seconds, though actual extraction parameters should be fine-tuned based on the beans’ condition that day. The milk is recommended to be steamed to about 150 ml, with less air intake than a latte to make the foam finer, and the optimal temperature is between 55–60°C to ensure a smooth mouthfeel. Finally, slowly pour the milk into the coffee, and decide whether to latte art based on preference. Since the foam is thinner, the final appearance is usually flatter.

This flavor-rich and delicate Flat White typically carries aromas of vanilla, chocolate milk, whiskey truffle, and is accompanied by the sweet-sourness of berries. It has a smooth and rich mouthfeel with a long-lasting aftertaste, making it an ideal choice for those who enjoy the essence of coffee and a refined texture.

Many consumers wonder if a Flat White can be made into an iced drink. In fact, most coffee shops typically only offer the hot version of a Flat White. This is because baristas hope customers can fully experience the delicate fusion between the milk foam and coffee liquid; only when the milk foam is thin enough, dense enough, and at an appropriate temperature can one enjoy the complete layers of flavor sip after sip before the foam separates. Adding ice can lead to a dilution effect as the cooled milk and coffee interact, affecting the overall taste and layered experience.

If you still prefer an iced, rich milk coffee, it is recommended to try the recently popular "Dirty." This drink involves pouring freshly extracted hot espresso directly over iced fresh milk, creating a visually “dirty” contrast effect, and delivering a distinctly different taste experience through the stimulation of hot and cold.

In summary, the main differences between a Flat White and a latte lie in milk foam thickness, coffee ratio, and overall flavor expression. With thinner milk foam and a higher coffee proportion, the Flat White emphasizes the characteristics of the coffee itself, especially suitable for showcasing the details of SOE single-origin flavors. For those who are losing weight or controlling calorie intake, the Flat White typically uses less milk and a smaller cup size, resulting in relatively fewer calories, making it a lighter choice compared to a latte. Moreover, while the Flat White is generally served hot, if you crave a cool sensation, the Dirty is a refreshing alternative with a similar flavor profile.

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