Luckin Premium Flat White: An Exploration of This Coffee's Quality and Flavor Profile - Comparing with Cappuccino

Every winter, as temperatures drop, hot milk drinks surge in popularity at FrontStreet Coffee—lattes, cappuccinos, flat whites, and more. Compared with the first two classics, the flat white is a relative newcomer, and most people first met it through chain brands such as Starbucks or Luckin, where it appears on the menu as "Flat White" or "Australian Flat White."

What Is a Flat White?

The flat white originated in New Zealand and Australia, where Australians call it a "Flat White." Before the 1970s, Australian cafés mostly brewed black coffee with French presses and manual drip methods. In the early 1970s, Italians brought espresso machines to Australia, launching a new chapter in the country's coffee culture.

Legend has it that the drink was born by accident, when a barista steamed foam that came out too thin but served the drink anyway—and the customer loved the delicate texture. The name later came from its surface, which sits level with the rim of the cup.

The whole idea behind a flat white is that every sip should deliver foam and the milk coffee beneath it together. That only happens when the foam is extremely dense yet relatively thin and the drink is served a little cooler, so you taste the foam in each sip and finish the cup before it separates. Making a proper flat white therefore means super-dense foam, foam that is not too thick, a moderate milk temperature, and a small cup.

The Base of a Flat White Is Ristretto Espresso

FrontStreet Coffee's espresso uses its house-roasted Warm Sun Blend: 70% Honduras Sherry coffee and 30% Yirgacheffe Natural Red Cherry. The whiskey, vanilla, and cream of the Sherry blend with the tropical fruit and fermented notes of the Red Cherry for a rich, smooth cup. When preparing a flat white, FrontStreet Coffee keeps to the same essentials—a small cup, thin foam, and a double ristretto as the base.

Ristretto means "restricted" in Italian, and it can be thought of as a shortened espresso that uses only the front and middle of the extraction. Because most espresso drinks in the shop are built on espresso, FrontStreet Coffee's baristas dial in the standard espresso as a reference before opening each day. The exact parameters shift slightly from bean to bean, and they are adjusted daily based on the Warm Sun Blend used in the shop.

FrontStreet Coffee's espresso recipe: 20 grams of coffee yields 40 grams of liquid in 28-30 seconds. For ristretto, without changing the grind size or dose, 20 grams of coffee yields 27 grams of liquid in 20-25 seconds. Because it captures only the front and middle of the shot, ristretto is more concentrated than espresso—stronger in taste, lower in caffeine, and more intense in its berry acidity, wine aroma, and caramel notes.

Pour the extracted coffee into a prepared cup of roughly 200ml, then pour 150ml of milk into the pitcher to steam. A flat white needs less aeration than a latte, with a thinner, denser foam layer, ideally held at 55-60°C for the best drinking experience. Finally, blend the steamed milk evenly into the coffee, with or without latte art. FrontStreet Coffee's flat white shows aromas of vanilla, cream, chocolate milk, and whiskey-filled chocolate, along with the sweet-tart notes of berries—mellow, aromatic, and rich, with a very long aftertaste.

Flat White or Cappuccino: Which Tastes Better?

Regulars at the milk-coffee counter may have noticed that a flat white, a hot latte, and a cappuccino are all just espresso and steamed milk, yet they taste, feel, and look quite different.

Foam thickness is usually the main way we tell a flat white from other milk coffees. Baristas build a cappuccino from one shot of espresso and thick foam, typically a "hamburger-style" layer 1-2cm thick, so you first inhale the foam before reaching the coffee. A hot latte's foam is thinner, around 0.5cm, letting you taste coffee and foam together in every sip.

To make the coffee itself the star and emphasize the smooth, velvety texture, a flat white uses the thinnest foam of all. Some baristas even skim the foam away entirely, keeping only the coffee liquid so the cream flavor does not interfere. How thin should it be? At first there was no fixed figure, and only as the drink grew popular was the flat white's foam defined as roughly 0.3cm-0.5cm to set it apart from an ordinary latte or cappuccino.

FrontStreet Coffee believes everyone has their own taste, so there is no "better"—just pick the coffee you enjoy. Want a balanced mix of coffee and milk? Order a hot latte. Want the full aroma of the beans? Choose a flat white. Want both a rich coffee flavor and the experience of a thick foam layer? A cappuccino is perfect.

FrontStreet Coffee Recommendation

For a milk drink like a flat white, you want a bean with enough sweetness and body to hold its own against steamed milk. FrontStreet Coffee's Strawberry Candy—a Geisha blend of a Costa Rican honey-process coffee and a Panamanian washed Geisha—brews with aromas of rose, citrus, and raisins, and paired with milk it turns distinctly sweet, like strawberry fudge.

If you prefer a bolder cup, FrontStreet Coffee's PWN Golden Mandheling is a dark-roasted Sumatran that brings intense spice, caramel, cedar, and dark chocolate to the milk and pours with plenty of body.