How to make a flat white

TL;DR

A flat white is a double ristretto or short double espresso (around 40 g out) topped with about 130 to 150 g of silky, barely-textured milk in a 5.5 to 6 oz cup. The defining feature isn’t the size, it’s the milk: stretched only briefly so the foam layer ends up under 0.5 cm thick, glossy, and pourable as a single liquid with the espresso. Get the milk texture right and the drink makes itself. Get it wrong and you’ve made a small latte or a wet cappuccino.

If you’re new to steaming, read how to steam milk for latte art first. This guide assumes you can already produce wet paint texture; the flat white is mostly about restraint, ratio, and cup choice.

What a flat white actually is

The flat white came out of Australia and New Zealand in the 1980s and the spec has drifted since, but the version worth making at home is:

• Cup: 5.5 to 6 oz (160 to 180 ml). Tulip-shaped, ceramic, preheated.
• Espresso: double shot, often pulled short. 18 g in, 36 to 40 g out. Roughly 1:2 or slightly tighter.
• Milk: whole milk, steamed to 60 to 65°C (140 to 149°F), stretched only briefly so the microfoam layer is thin and integrated.
• Total volume: the cup is full. No empty space, no towering foam dome.

The drink sits between a cortado (smaller, more espresso-forward, almost no foam) and a latte (larger, more milk, thicker foam). Compared to a cappuccino, a flat white has less foam and more liquid milk, which is why it tastes more like coffee and less like a milky dessert.

The shorthand that works: a latte is milk with espresso in it. A flat white is espresso with just enough milk to round it off.

The recipe

1. Pull a double, slightly short

Dose 18 g, pull 36 to 40 g out in 25 to 30 seconds. Many cafes pull a double ristretto for flat whites (18 in, 28 to 32 out), which intensifies the espresso so it cuts through the milk. Try both on your bean and pick.

If your espresso disappears into the milk and the drink tastes flat, your shot is too long. Tighten the ratio before you change anything else.

2. Pour milk into the pitcher

For a single 6 oz flat white, pour cold milk to just below the spout’s lowest point in a 12 oz pitcher. That’s around 150 to 170 g. You want a small amount of waste, not a lot; over-pouring is the leading cause of overstretched flat-white milk because beginners feel obligated to use it all.

Whole milk is the right answer. The fat is what gives the drink its signature glossy body. Skim makes meringue. Oat is the best non-dairy substitute (Oatly Barista, Minor Figures) but produces a slightly thicker, sweeter drink.

3. Steam with restraint

Purge the wand. Submerge the tip just below the surface and turn steam fully on. You want the stretching phase (the “tssss” hiss where you’re injecting air) to last 2 to 4 seconds, maximum. For a latte it’s 5 to 8 seconds. A flat white needs about half the air.

Then drop the pitcher slightly so the tip is fully submerged, angle it to create a whirlpool, and let the milk spin until the pitcher is too hot to hold comfortably for more than a second (around 60 to 65°C). Cut the steam, wipe and purge the wand immediately.

The texture target: the milk surface should look like wet, glossy paint with no visible bubbles. If you can see individual bubbles, you’ve stretched too long. Tap and swirl hard before pouring; this integrates whatever microfoam is on top into the body of the milk.

4. Pour low and steady

Pour from a few inches up to start, into the centre of the crema. Once the cup is about two-thirds full, drop the pitcher close to the surface and let the white milk surface through. This is where you can pour a small heart or rosetta if you want; most flat whites get a simple heart or a dot of foam in the centre.

The finished drink should have a thin ring of white at the top, no dome, and the cup full to within a few millimetres of the rim.

How it differs from related drinks

A practical comparison, because every cafe defines these slightly differently and the names don’t help:

• Cortado: ~4 oz total. 1:1 espresso to milk by volume. Almost no foam. More espresso punch.
• Flat white: ~6 oz total. Double (often ristretto) plus textured milk. Thin microfoam layer. Espresso-forward but rounded.
• Cappuccino (traditional): ~6 oz total. Equal parts espresso, steamed milk, foam. Distinct foam dome. Drier mouthfeel.
• Latte: 8 to 12 oz. Same espresso, much more milk, slightly thicker foam (around 1 cm). Milkier, softer.

The flat white and cappuccino are the same total volume in most cafes. The difference is all in the milk texture: cappuccino milk is stretched longer and stays as a distinct foam layer; flat white milk is stretched briefly and integrates into a single textured liquid. If the foam dome is what you’re after, see how to make a cappuccino at home; this guide is about the thinner, coffee-forward pour.

Cup choice matters more than you’d think

A flat white in a 10 oz latte cup is a small latte. Drink size is defined by the cup, and stretching a small amount of milk into a large cup forces you to either overstretch (to fill it) or under-fill (to keep the texture right). Neither works.

Buy a set of 5.5 to 6 oz tulip cups if you’re going to make this drink regularly. Notneutral Lino 6 oz, Acme & Co 6 oz, and Loveramics Egg 5.5 oz are the standard recommendations. Ceramic, preheated under the group head or with a splash of boiling water, holds temperature far better than a cold cup.

A cold cup drops finished drink temperature by 5 to 10°C, which on a 60°C flat white means you’re drinking it lukewarm. Preheat every time.

Common mistakes

Overstretching the milk. The single most common flat white mistake. People learn to steam on lattes (where 5 to 8 seconds of stretch is correct) and apply the same instinct to a flat white. Stop the air phase early. Two to four seconds, then submerge.

Using a latte cup. A 10 to 12 oz cup turns the drink into a small latte regardless of how you steam. The cup is part of the recipe.

Pulling a normal-length double and drowning it. 36 g of espresso into 130 g of milk is on the edge of tasting milky. If the drink doesn’t taste like coffee, pull a ristretto next time (18 in, 28 to 32 out) and the espresso will reassert itself.

Skipping the swirl. Even good microfoam separates into layers in the pitcher within 10 seconds of cutting steam. Tap firmly to pop large bubbles, swirl until the milk looks like wet paint again, then pour. Skipping this gives you a foam disc floating on hot milk.

Letting the foam layer get thick. If you end up with more than half a centimeter of foam on top of the finished drink, that’s a cappuccino. The foam should be a thin, glossy skin, not a layer you can spoon off.

Troubleshooting

My flat white tastes like warm milk with a coffee aftertaste. The espresso is too long, the milk is too much, or both. Try a 1:1.5 ratio (18 in, 27 out) and check that you’re using a 6 oz cup, not larger. If the cup is correct, the shot is the problem.

The milk has big bubbles I can’t get rid of. You stretched too long, kept the tip too close to the surface, or both. Restart with a fresh pitcher of cold milk. You cannot rescue bubbled milk by swirling harder; tap, sure, but oversized bubbles indicate the structure is wrong throughout.

I can’t pour latte art on it because the milk feels too thin. Flat white milk is thinner than latte milk by design. If you want crisp art, stretch a touch longer (3 to 4 seconds instead of 2) and pour from closer to the surface. Don’t push past 4 seconds or you’ve made latte milk.

The drink is the right size but the espresso disappeared. Your shot is under-extracted or your milk is over-stretched and sweetening the drink. Taste the espresso alone first; if it’s sour or weak, fix the dial-in. If the espresso is good on its own, cut the stretch time and try again.

My milk scalds and tastes cooked. You went past 65°C. Above 70°C the lactose starts to denature and the milk tastes sweet then chalky then burnt. Cut steam when the pitcher base is uncomfortably hot to hold for more than a second, not when it’s untouchable.

I’m using oat milk and it splits in the cup. Some oat milks curdle when they hit acidic espresso, especially light roasts. Use a barista-formulated oat milk (Oatly Barista, Minor Figures, Califia Barista Blend), steam to slightly lower temp (around 55 to 60°C), and pour as soon as it’s textured. Don’t let steamed oat milk sit; it separates fast.