Recipe · Espresso with Milk
Flat White: Complete Recipe and Microfoam Technique
The flat white is the most technically demanding espresso-milk drink and the most rewarding in flavor. Its secret lies not in any special ingredient: it's in the precise ratio between a powerful double espresso and fine microfoam — almost non-existent — that transforms milk into a silky wrapper for the coffee.
In this guide you'll find the complete recipe with exact proportions, the step-by-step process for steaming milk correctly, the pouring technique, and a detailed comparison with latte, cappuccino and cortado to understand exactly where the flat white sits within the espresso menu.
History and Origin
Australia vs. New Zealand: The Debate That Remains Open
The flat white is one of the youngest coffee drinks with documented origin controversy. The dispute pits Australia against New Zealand, and neither side has yielded an inch for decades.
The Australian version places the origin in Sydney during the 1980s, when cafés like Bar Coluzzi in Kings Cross were already serving short, foam-free milk coffees. Barista Derek Townsend is credited with formalizing the name around 1985. The New Zealand version points to Auckland and cafés like DKD, where the flat white supposedly emerged as a reaction to cappuccinos with too much dry foam that dominated the era.
What both sides share is the philosophy: a quality double espresso over textured milk with a minimal foam layer, in a small cup that preserves the coffee's concentration. That philosophy traveled to Europe and the United States with the third wave of coffee from the 2000s onward and today is one of the pillars of any specialty coffee menu.
Starbucks popularized the term globally from 2015, though their larger-volume version differs from the classic Australasian recipe. In the specialty coffee world, the definition remains the original: small cup, full double espresso, integrated microfoam.
Exact Proportions
The Recipe: 18 g, 1:2 Ratio, 120-150 ml Total
Precision is the key to flat white. Unlike other drinks where there's room to improvise, the flat white lives or dies by the numbers:
- Coffee dose: 18 g of finely ground coffee (equivalent to a standard specialty double espresso).
- Extraction ratio: 1:2, meaning 18 g of coffee produces 36 g of liquid espresso. Extraction time should be between 25 and 35 seconds.
- Milk: 110-120 ml of fresh whole milk, steamed to 60-65°C with integrated microfoam and no separate dry foam.
- Total volume in cup: 120-150 ml (espresso + textured milk).
- Microfoam layer: maximum 5 mm (0.5 cm). If you measure more than 1 cm of foam, technically you have a small cappuccino.
Using a precision scale to weigh both the coffee and the extracted espresso isn't a luxury: it's the only way to ensure consistent ratios. A 3-4 g difference in the espresso radically changes the balance of the final drink.
Step by Step
How to Make a Perfect Flat White
Step 1: Weigh and Grind the Coffee
Weigh 18 g of coffee beans just before brewing. Coffee oxidation begins within seconds of grinding, so grinding fresh is non-negotiable for a quality flat white. The grind should be fine, similar to powdered sugar or fine flour, but not dusty. Too fine a grind clogs the extraction; too coarse speeds it up and produces a watery, acidic espresso.
Step 2: Prepare the Portafilter and Extract Espresso
Distribute the coffee evenly in the portafilter, level with a distributor or your finger, and compact with the tamper applying consistent vertical pressure (approximately 20 kg). Flush the first stream of hot water from the machine before inserting the portafilter to purge stale water.
Extract until you obtain 36 g of liquid espresso in 25-35 seconds. The crema should be dark hazelnut to brown in color, uniform and without gray patches. A correctly extracted espresso has an intense aroma, initial sweetness and balanced acidity. Learn more about espresso technique if you need to dial in your extraction.
Step 3: Steam Milk to Achieve Microfoam
Use fresh whole milk at refrigerator temperature (4-6°C). Fill the pitcher halfway or slightly less, as the milk will expand slightly when steamed. You need the right milk pitcher: 350 ml pitchers with a fine spout allow superior control over the final pour.
Steaming technique: purge the steam wand briefly to eliminate condensation. Insert the tip 1-2 cm below the milk surface, slightly off-center to create a swirling motion. Open the steam to full power. During the first 2-3 seconds keep the wand near the surface to incorporate microbubbles (you'll hear a gentle "tearing paper" sound). Then submerge 1-2 cm deeper to continue heating without adding more air.
Stop the steam when the pitcher reaches 60-65°C or when you can't hold your palm against the pitcher for more than 3-4 seconds. Tap the pitcher gently on the counter to break any large bubbles and swirl it in circular movements to homogenize the texture. The milk should look like satin liquid cream, glossy and with no visible bubbles.
Step 4: Pour and Serve
Pour the textured milk over the espresso in two phases: first tilt the pitcher and let a slow stream fall through the center of the cup so that the milk integrates with the espresso (you'll see the color shift from black to brown). When the cup is about three-quarters full, increase the pace and bring the pitcher closer so the denser foam comes out and forms the latte art pattern on the surface. A well-executed heart or rosette indicates that the microfoam has the correct texture.
Drink Comparison
Flat White vs Latte vs Cappuccino vs Cortado
The difference between these four drinks is not arbitrary: each one has a different balance between coffee, milk and foam that produces a distinct flavor and texture profile.
| Drink | Total Volume | Foam Layer | Espresso/Milk Ratio | Flavor Profile |
|---|---|---|---|---|
| Flat White | 120–150 ml | 0.5 cm (microfoam) | ~1:3 (36 g esp. / 110 ml milk) | Intense, silky, coffee-dominant with mild dairy softness |
| Latte | 200–300 ml | 1–1.5 cm | ~1:6 (36 g esp. / 220 ml milk) | Creamy, smooth, milk-forward; ideal for latte art |
| Cappuccino | 150–180 ml | 1.5–2 cm (dry foam) | ~1:2 (espresso, milk and foam in equal parts) | Balanced, with contrast between coffee, milk and airy texture |
| Cortado | 60–90 ml | None or minimal | ~1:1 (espresso nearly equal to milk) | Very intense, little milk sweetness, coffee clearly dominant |
The key to understanding this table: more milk volume means softer coffee flavor; more foam means airier texture. The flat white occupies the sweet spot between the cortado (too short for some) and the latte (too milky for others).
Advanced Tips
Common Mistakes and How to Avoid Them
- Foam too dense or dry: this happens when you incorporate too much air in the initial phase. If the milk bubbles excessively, you're adding air instead of microbubbles. Fix: keep the wand more submerged from the start.
- Milk too hot: if you exceed 70°C, the milk proteins denature and the dairy flavor becomes burnt and bitter. Use a thermometer or practice the touch technique.
- Espresso too weak: if the espresso is under-extracted (watery, very acidic), the milk will completely overpower it. Dial in your ratio and extraction time before adding milk.
- Skim or plant-based milk: whole milk has the best fat-to-protein ratio for creating stable microfoam. Plant-based milks (oat, soy, almond) require "barista" formulations designed to steam without separating.
Explore more recipes and techniques in our coffee recipes section and discover all the coffee processes that influence flavor from origin to cup.
Frequently Asked Questions
Common Questions About Flat White
How much milk does a flat white contain?
A standard flat white contains between 110 and 120 ml of textured whole milk, plus the double espresso (36 g), for a total of approximately 150 ml in the cup. The key difference from a latte is that the volume is smaller and the microfoam layer does not exceed 5 mm. This higher espresso-to-milk ratio makes coffee clearly the protagonist of the flavor.
What is the difference between a flat white and a latte?
The main difference is volume and concentration. A standard latte has between 200 and 300 ml total with a microfoam layer of 1-1.5 cm, resulting in a more milky and smooth profile. The flat white has 120-150 ml total with only 0.5 cm of microfoam, so the espresso dominates the flavor more and the texture is silkier and more integrated.
What espresso should I use for a flat white?
Ideally, a double espresso with 18 g of finely ground coffee and an extraction ratio of 1:2 (18 g coffee → 36 g liquid) in 25-35 seconds. For a balanced flat white, look for coffee with good body, natural sweetness and moderate acidity: medium roast blends or single-origin coffees from Latin America work very well.
How do I make perfect microfoam for a flat white?
Perfect microfoam is achieved by controlling the steam wand position: insert the tip 1-2 cm below the surface, slightly off-center to create a swirl. Apply steam with the wand just below the surface for the first 2-3 seconds (air incorporation phase), then submerge the wand 1-2 cm deeper to continue heating without adding more bubbles. Target temperature is 60-65°C. When done, tap the pitcher and swirl it: milk should flow like glossy liquid cream with no visible bubbles.