Introduction:Latte, cappuccino, and flat white are the three most common milk-based coffees in cafés. Though they may look similar, each has its own unique characteristics. This article delves into their historical backgrounds, milk-to-foam ratios, espresso extraction methods, and flavor differences to help you master the key details of each drink and understand how to brew café-quality milk coffee at home.

Latte, cappuccino, and flat white—these three classic milk coffees, though all based on espresso and paired with varying proportions of milk and foam, offer distinctly different taste and flavor experiences due to subtle variations in preparation techniques and ratios. This article will begin with their historical origins and step-by-step break down the key differences among the three in terms of espresso extraction, milk volume, and foam thickness, so you can fully grasp their fundamental distinctions. Additionally, we’ll discuss practical extraction parameter recommendations to help you easily replicate café-grade milk coffee at home.

Many people think coffee varieties are complex, but in fact, many items are simply slight variations in ingredient combinations that result in different flavor profiles. For example, Americano and long black in the black coffee category may look similar but are actually quite different. The world of milk coffee is even more diverse—just take latte, cappuccino, and flat white, which are commonly found in cafés. Though all combine espresso with milk, each holds a unique place of its own. So what makes them "stand alone" on the menu rather than being lumped together as "milk tea coffee"?

For the preparation of these three milk coffees, we used freshly roasted ‘Classic Blend’ beans from day 5 after roasting. This blend combines beans from Brazil, Indonesia, and Vietnam, offering caramel sweetness and a hint of spice. To achieve rich and stable crema, we opted for a dark roast, ensuring consistent performance whether making black coffee or adding milk.

Latte: A Mild Flavor Dominated by Milk

The latte (Caffè Latte) is an entry-level coffee for many and one of the most popular milk coffees worldwide. Although its history lacks detailed written records, as early as the 17th century, Europeans were already adding milk to coffee, often brewed using cloth filters or simple moka pots. It wasn’t until the widespread use of espresso machines, with their steam wands capable of frothing hot milk consistently, that the modern latte gradually took shape and gained global popularity along with latte art.

In terms of preparation, the latte is based on a double shot of espresso, typically around 40 grams of coffee grounds, and is combined with a large amount of hot milk, with a total volume of about 300 milliliters—where milk makes up the vast majority. This results in a noticeably sweet flavor and smooth texture, making it ideal for those who dislike excessive coffee bitterness. Additionally, the latte is highly accommodating to added flavorings; you can personalize your coffee experience by adding syrups like caramel or vanilla according to your taste.

Cappuccino: The Classic Trio of Rich Foam

The name cappuccino originates from Italy and is said to be related to the 18th-century Viennese drink called 'Kapuziner,' which mixed coffee with honey, spices, and cream, and was named for its color resembling the robes of Capuchin monks. Later, this concept made its way to Italy, where it merged with modern espresso technology to evolve into the classic combination of a double shot of espresso, an equal amount of steamed milk, and a thick layer of foam.

Traditional cappuccinos emphasize the '1:1:1' golden ratio—that is, equal parts espresso, steamed milk, and foam. However, in practice, this ratio can often result in too much foam, negatively affecting the mouthfeel. Therefore, many baristas slightly adjust the proportions to create a more balanced overall structure. Using a 200-milliliter cup as an example, we use 40 grams of double espresso, paired with about 140–150 grams of steamed milk, leaving enough space for the foam to reach a thickness of approximately 1.5 centimeters, creating the classic ‘hamburger’ top.

Flat White: A Smooth Flavor Led by Coffee

Compared to the latte and cappuccino, the flat white can be considered the ‘newcomer’ in the milk coffee world. This drink originated in Australia and New Zealand in the late 20th century, where consumers felt that traditional cappuccinos and lattes had too high a milk proportion, which obscured the flavor of the coffee itself. Thus, the flat white was developed to place more emphasis on showcasing the coffee.

The most distinctive feature of the flat white is its extremely thin layer of foam and smooth liquid surface. Using a cup of about 200 milliliters in capacity, it is based on a 27–30-gram double ristretto (a more concentrated double shot), with only about 160 milliliters of hot milk added, and the foam thickness is just about 0.3 centimeters. This combination highlights the aroma and acidity-sweetness layers of the coffee while retaining the smooth texture of the milk. The overall temperature is recommended to be controlled at 50–55°C, the optimal drinking temperature.

Espresso Extraction Volume Comparison: Latte = Cappuccino > Flat White

Among these three milk coffees, the latte and cappuccino mostly use a standard double shot of espresso (about 40 grams of coffee grounds yielding approximately 60–80 milliliters), with the focus placed on the use of milk and flavor balance. The flat white, on the other hand, emphasizes the essence of the espresso extraction, often using a ‘double ristretto,’ extracting only the first and middle portions of the concentrated coffee (20 grams of coffee grounds yielding 30 milliliters in 22–25 seconds) to enhance the layers and aroma expression of the coffee.

A Detailed Breakdown of Milk and Foam Ratios

Looking at the overall proportions, the latte has the largest amount of milk, with foam about 0.5–1 centimeter thick, suitable for showcasing latte art and a smooth mouthfeel; the flat white has a slightly lesser amount of milk but extremely thin foam, focusing on smoothness and the coffee’s inherent flavor; the cappuccino has the thickest foam, usually exceeding 1.5 centimeters, forming its signature top layer, where the foam has a more pronounced impact on the flavor.

Overall, although these three milk coffees may appear similar, they actually differ significantly in every detail—from the technique of espresso extraction, to the ratio of milk pairing, to the control of foam thickness—all of which are key factors influencing the final flavor. Understanding these differences, whether ordering at a café or attempting to make them at home, can help you make more flavorful choices.

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