Introduction:Why do lattes, cappuccinos, and flat whites from different cafés taste so different, even though they’re all milk coffees? The key lies in the precise pairing of espresso characteristics with the amount of milk used. This article takes an in-depth look at the differences between these three classic Italian-style milk coffees—from coffee bean roast levels, espresso extraction parameters, milk ratios, to milk foam thickness—and provides practical brewing suggestions and specific values to help you adjust your milk coffee to achieve a balanced and smooth flavor based on the beans you have.

Why does the same milk coffee taste so different across cafés? The answer often lies in the subtle interplay between the characteristics of the coffee beans and the amount of milk used. In actual preparation, only by flexibly adjusting the milk quantity according to the roast level and flavor profile of the coffee beans can each milk coffee showcase the desired balance of flavors. Below, we’ll break down the unique features of these three classic Italian-style milk coffees—latte, cappuccino, and flat white—not only sharing practical extraction parameters, exact gram amounts of milk added, but also techniques for controlling milk foam thickness, helping you understand how to adjust based on the beans to brew a harmonious milk coffee.

Many coffee enthusiasts often wonder about the specific differences between lattes, cappuccinos, and flat whites when choosing between them. That’s why search terms like “what’s the difference between a latte and a cappuccino” appear frequently. This article will take a comparative approach to clearly explain the core characteristics of these three milk coffees, helping you master how much milk each drink should use, and even allowing you to flexibly adjust based on the materials you have on hand to make more authentic milk coffee.

The reason for needing to flexibly adjust the ratios is that even for coffee drinks with the same name, the standards can vary quite a bit across different cafés. Take the latte, for example—some shops serve it in a large, generous cup, while others offer it in a smaller size. Behind this lies not only differing understandings of the drink, but also the inherent characteristics of the coffee beans and milk themselves. Some beans yield brews that are more bitter or acidic, while others are lighter or richer in flavor. Therefore, only by adjusting the proportions can you bring out the best performance of the materials at hand.

Let’s start with the most popular latte. This milk coffee is widely loved not only for its broad appeal but also for its ability to showcase a variety of delicate latte art. Its core charm lies in achieving an excellent balance between coffee and milk flavors—the coffee doesn’t overpower, nor is it completely masked by the milk. To achieve this effect, the key is to add a sufficient amount of milk to mellow the intensity of the espresso.

Taking a common medium-dark roasted blend as an example, one café uses a classic blend (containing Brazil, Mandheling, and a small amount of Robusta to enhance aroma and crema) to make a latte, using a 1:5 coffee-to-milk ratio. Specifically, 20g of coffee grounds are used, extracted for 30 seconds to produce 40ml of espresso, then 200ml of milk is added. For hot drinks, an additional ~0.5cm-thick layer of milk foam is whipped up to aid in latte art and enhance texture layers. This combination allows the coffee flavors to remain distinct while bringing out layers of chocolate, toasted bread, nuts, and cream, with a smooth mouthfeel and long-lasting aftertaste.

If switching to a medium-light roasted bean such as Ethiopia Huila, it’s recommended to adjust the ratio to 1:4 to 1:4.5—that is, 40ml of espresso paired with 160–180ml of milk—to preserve more of the coffee’s inherent berry and floral characteristics.

Next is the distinctive cappuccino. The biggest feature of this drink is the combination of strong coffee flavor and thick milk foam—not only does it have a ~2cm-high mound of foam on top, but the overall mouthfeel is also denser and more substantial. When making it, the total amount of milk is reduced to let the coffee flavor take center stage.

Using the same medium-dark roasted blend as an example, the recommended ratio is 1:4—that is, 40ml of espresso with 160ml of milk—but the actual amount of milk poured into the cup may be slightly less due to the volume taken up by the foam. If using a medium-light roasted bean like Huila, it’s suggested to further lower the ratio to 1:3.5 to ensure the coffee flavor isn’t diluted while maintaining a rich mouthfeel.

Finally, let’s look at the flat white, which has garnered significant attention in recent years. This drink combines the smoothness of a latte with the intensity of a cappuccino—the coffee flavor is pronounced yet not bitter, with a notable sweetness. A common approach is to control the milk quantity somewhere between that of a latte and a cappuccino.

Using a medium-dark roasted blend as an example, the recommended ratio is 1:4.5—that is, 40ml of espresso with 180ml of milk, along with ~0.3cm of thin milk foam. This combination highlights flavors such as chocolate, caramel, and nuts, with a smooth mouthfeel and low bitterness. If switching to a medium-light roasted bean, it’s suggested to further reduce the milk quantity. Another advanced method is to use a short-shot espresso (ristretto)—that is, using the same coffee amount (20g) to extract 30ml of liquid within 30 seconds, then combining it with 120ml of milk at a 1:4 ratio. This method enhances sweetness and reduces bitterness, but requires adjusting the grind to ensure extraction efficiency, making it suitable for scenarios where higher flavor demands are expected.

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