Introduction:Flat White, Flat White (Starbucks style), and Aussie Flat White may seem similar at first glance, but they actually differ in origin, milk foam thickness, milk ratio, and flavor profile. This article delves into the controversy surrounding the origins of Flat White and explores two major regional approaches, while detailing its key differences from Latte and Cappuccino. It also provides professional guidance on coffee bean selection, espresso extraction, and milk steaming parameters to help you master the essence of crafting an ideal Flat White and key points for tasting.

In the world of specialty coffee, Flat White is an extremely popular milk-based coffee, though it may be referred to as Flat White, Au Lait Blanc, or Pure Artisan White by different regions and chain brands. Although these names all refer to a beverage based on espresso and milk, they actually have significant differences in milk foam thickness, milk ratio, and overall flavor. This article will start with the origins of Flat White, compare the practices in New Zealand and Australia, analyze its differences from Latte and Cappuccino, and further guide you on how to achieve a balanced and layered Flat White through correct extraction parameters and milk handling.

The origin of Flat White remains a topic of debate, mainly divided into two theories: one believes it was born in Melbourne, Australia, while the other claims it originated in New Zealand. Regardless of where it originated, this coffee quickly became one of the classic drinks in local cafés. The most distinctive feature of Flat White lies in its relatively intense coffee flavor, smaller amount of milk, and extremely thin layer of milk foam. These traits allow it to retain the strong personality of espresso while offering the smooth texture of milk, making it the “perfect balance point” in the eyes of many coffee enthusiasts.

In practice, the way Flat White is prepared varies slightly across regions, generally falling into two main styles: New Zealand and Australia. The New Zealand style typically uses a double ristretto as the base, emphasizing a strong and robust coffee flavor with an extremely thin layer of milk foam that almost adheres to the rim of the cup, creating what is known as a "flat white" appearance. The Australian style, on the other hand, often uses a single espresso as the base with a slightly thicker milk foam. While it also emphasizes the fusion of coffee and milk, the overall taste is relatively softer. Regardless of which style you choose, the final flavor is closely related to the characteristics of the coffee beans used.

Taking a classic dark roasted espresso blend as an example, such beans are usually a mix of beans from regions like Brazil, Indonesia, and Vietnam. After deep roasting, they can showcase rich aromas of dark chocolate, butter, and nuts, along with a generous and stable crema (coffee oil). This crema not only enhances the layered texture of the coffee but also forms a tighter bond with the milk, resulting in a rounder and fuller overall flavor. Therefore, choosing the right coffee beans is an important foundation for making a successful Flat White.

When comparing Flat White with Latte and Cappuccino, the most obvious differences lie in the thickness of the milk foam and the proportion of milk used. The term "Flat" in Flat White literally means "flat," referring to the extremely thin layer of milk foam that is nearly level with the rim of the cup, generally between 0.3 to 0.5 centimeters thick. In comparison, the milk foam layer in a Cappuccino is usually around 1 to 2 centimeters, while a Latte typically ranges between 0.5 to 0.7 centimeters, often featuring a slightly raised foam layer. If the milk foam is too thick, it not only ruins the "flat" feel of the Flat White but also affects the integration between coffee and milk.

In addition, Flat White uses a relatively restrained amount of milk to ensure that the coffee flavor isn’t diluted by too much milk. For example, when using a 180 ml ceramic cup, it often features a base of double ristretto (about 30 grams of coffee liquid), with an additional 150 grams of hot milk. This ratio highlights the aroma and richness of the coffee itself while maintaining the smooth texture of the milk. If the milk ratio is too high, the drink may lean more towards a milk-based beverage with coffee flavor rather than a true milk coffee.

To make an ideal Flat White, the key lies in controlling the details of espresso extraction and milk steaming. It is generally recommended to use a double ristretto, using about 20 grams of coffee grounds to extract approximately 30 grams of coffee liquid, with a time control between 22 to 24 seconds. This extraction parameter can fully extract the essence of the coffee’s early stages, presenting a rich and layered taste. It is important to note that each coffee bean has different characteristics, so it is advised to fine-tune grind size and extraction time according to the actual beans and roast level used, to achieve the best balance.

For milk handling, it is recommended to use about 150 ml of whole fresh milk. The aeration amount during steaming should be less than that for a Latte to ensure the milk foam is fine and the thickness is controlled around 0.3 centimeters. The ideal milk temperature should be maintained between 55 to 60 degrees Celsius, which not only preserves the natural sweetness of the milk but also ensures a comfortable drinking experience. Finally, slowly pour the steamed milk into the espresso. Because the milk foam is extremely thin, the overall liquid surface will appear flat, which is one of the reasons why Flat White is also called "Flat White Coffee."

When the espresso made from a dark roasted blend has rich aromas of dark chocolate, butter, and macadamia nuts, the Flat White created by blending it with milk often presents flavors similar to chocolate milk and caramel cookies. It feels smooth and velvety on the palate, with a long-lasting and layered aftertaste. This flavor profile is one of the reasons why Flat White is beloved by coffee enthusiasts. Whether you prefer the New Zealand or Australian approach, mastering the key parameters of coffee bean selection, espresso extraction, and milk steaming will allow you to enjoy a professional-grade Flat White either at home or in a café.

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