Introduction:Flat White, as a classic coffee originating from Australia, is renowned for its rich coffee aroma and delicate microfoam. Compared to a latte, it places greater emphasis on balance and layering. This article delves into the key differences between Flat White and latte in terms of espresso extraction, milk foam thickness, and overall proportions, while also detailing the flavor characteristics of ristretto and regular espresso. It provides professional-grade steps for steaming milk, temperature control recommendations, and practical recipe parameters to help you accurately recreate the signature Starbucks Flat White flavor.
Flat White, also known as Australian White or Premium White Coffee, is an espresso-based milk coffee that highlights the essence of coffee. Originating in Australia, it has gained widespread popularity around the world in recent years. Compared to a latte, Flat White uses a more concentrated coffee shot, thinner milk foam, and a smaller overall volume, allowing the aroma and flavor of the coffee to stand out more prominently, resulting in a smooth and layered mouthfeel.
If a latte is likened to a perfect balance between coffee and milk, then Flat White is more like a deep fusion of the two—where the coffee aroma is more direct, the milk foam is as delicate as velvet, and the overall taste is smooth and layered. This unique flavor profile has made Flat White a classic choice for many coffee enthusiasts.
To make an authentic Flat White, it’s essential first to understand the technique of steaming milk. When preparing, subtract the estimated volume of the coffee shot from the cup’s capacity, then divide by approximately 1.2 (this coefficient may be slightly adjusted based on desired milk foam fluffiness and latte art requirements) to determine the amount of milk to pour. Next, release steam once without milk to purge condensation from the steam wand—it’s recommended to hold the steam wand close to the edge of the pitcher to avoid overheating by direct contact with the pitcher wall.
The depth to which the steam wand is inserted should be adjusted according to the steam pressure of your espresso machine: if the pressure is low, it’s advisable to keep the wand near the milk surface; at moderate pressure, insert it about 1 cm into the milk; if the pressure is high enough, it can even be inserted deeper. The steaming process is divided into two main stages: the first is stretching and frothing. When the steam wand is turned on, it produces a sound similar to “squeak—squeak,” marking the beginning of milk frothing. Depending on the desired outcome, the steaming time varies—generally, the longer the steaming time, the thicker the milk foam. For example, a latte typically requires milk foam about 1 cm thick, steamed for around 3 seconds; whereas Flat White needs thinner foam, about 0.5 cm thick, steamed for about 2 seconds, and the pitcher should be continuously rotated in the same direction to form a uniform vortex.
After frothing comes the texturing stage, where the milk naturally separates into layers—the upper layer being coarser bubbles and the lower layer relatively finer. Although the boundary between frothing and texturing is less distinct in commercial espresso machines, it’s still recommended to aim the steam tip at the upper coarse bubbles and fold them into the lower layer, ensuring the milk and foam are fully integrated. This process should maintain the milk temperature between approximately 55 to 65 degrees Celsius. Once texturing is complete, turn off the steam and immediately clean the steam wand—releasing a small amount of steam without milk is advised to remove residual moisture. Finally, check if there are any remaining bubbles on the milk surface; if so, gently tap the bottom of the pitcher or tap the table to eliminate them, then lightly shake the pitcher on the table to create a smooth milk surface, completing the milk preparation for blending with the espresso.
When discussing the preparation of Flat White, it’s crucial to highlight its fundamental difference from a latte in espresso extraction. In a standard practice at a certain café, Flat White uses two ristrettos instead of regular espressos. Specifically, 20 grams of finely ground coffee is used, extracted under 9–10 bar pressure with 94°C hot water quickly passing through the coffee bed, following a 1:1.6 coffee-to-water ratio to yield 32 grams of espresso, with the entire extraction process lasting about 25–30 seconds. In contrast, a latte uses two regular espressos—also 20 grams of coffee, but extracted at a 1:2 ratio to produce 40 grams of coffee, taking 28–32 seconds, resulting in different flavor profiles.
In terms of the coffee-to-milk ratio, Flat White adopts an approximate 1:6 ratio, blending the textured milk with the ristretto evenly, resulting in a total volume of about 180 milliliters; whereas a latte follows a 1:7.5 ratio, achieving a final volume of about 300 milliliters. These parameter differences directly influence the balance of coffee and milk in each sip, shaping their unique taste experiences.
Further exploring the differences in espresso types, ristretto is essentially a more concentrated espresso with a shorter extraction time. In one practical operation, ristretto often uses a Sunflower Warm Sun blend consisting of 30% sun-dried Yirgacheffe and 70% Honduran Sherry. This combination showcases rich layers even under high-concentration extraction. When extracted at a 1:2 ratio, the regular espresso exhibits pronounced fermented wine notes, sweet-tart berries, smooth vanilla cream, and sweet aftertastes of roasted nuts and caramel; whereas when extracted at a 1:1.6 ratio as a ristretto, in addition to retaining the fermented wine and berry tartness, it further emphasizes intense fruit expression and a distinct caramel sweetness, providing Flat White with a tighter and more flavor-concentrated coffee base.
The above content is compiled by CoffeeHunters, a coffee news website.
