Quick Answer: A cortado is a 1:1 ratio of espresso to steamed milk — about a 1oz double shot matched with roughly 1oz of milk steamed with almost no foam — served in a small 4 to 4.5oz Gibraltar glass, per Specialty Coffee Association convention. The technique that makes it work is keeping the steam wand tip submerged from the start instead of aerating the surface first, which is the opposite of how you’d steam milk for a latte or cappuccino. Done right, a cortado tastes like a softened shot of espresso, not a small milky drink.
A cortado gets confused with a flat white or a mini latte more than any other espresso drink, mostly because all three look similar in a small glass. The difference is ratio and foam: a cortado’s 1:1 pour and near-absent foam sit closer to straight espresso than to anything milk-forward. If you’re weighing it against a similar-sized drink instead of building it from scratch, see cortado vs cappuccino for how the ratio and caffeine actually compare.
What you need
| Item | Spec | Why it matters |
|---|---|---|
| Espresso shot | ~1oz double ristretto or single shot | Sets the base flavor; a weak or over-extracted shot has nowhere to hide in only 1oz of milk |
| Milk | ~1oz steamed, minimal foam | Matches the 1:1 ratio without pushing the drink toward latte territory |
| Glass | 4-4.5oz Gibraltar | Physically caps milk volume so the ratio stays honest |
| Steam wand or frother | Deep-submersion technique | Builds a glossy near-foamless texture instead of a cappuccino-style cap |
Step 1: Pull the shot first
Pull a double shot of espresso — about 1oz (30ml), leaning toward ristretto if your machine and grinder can dial it in — directly into the Gibraltar glass you’re serving in. Pulling into the serving glass instead of a separate shot glass saves a transfer step and means the crema is still intact when the milk goes in. A machine with stable pressure and temperature matters more here than in a bigger milk drink, since there’s so little milk to mask an inconsistent shot. Our best espresso machine guide covers picks that hold a consistent shot at home, and how to dial in espresso walks through grind and dose if the shot itself needs work first.
Step 2: Steam milk with almost no foam
This is the step that actually separates a cortado from a latte. For a latte or cappuccino, you hold the steam wand tip near the surface for a few seconds first to stretch in air — that’s what builds foam. For a cortado, skip that stretch phase almost entirely: submerge the tip below the surface from the start and keep the milk spinning in a tight vortex. You want a thin, glossy skin on top, not a foam cap you could spoon off. Stop around 130-140°F — slightly cooler than a latte’s typical 140-155°F target, since a cortado’s small volume heats fast and a longer steam risks scalding the little milk you’re using. Our how to steam milk for a latte guide covers the stretch-then-spin technique in more depth if you want the fuller mechanics, minus the stretch phase for this drink.
Rattleware 12oz Stainless Steel Pitcher
- 12oz size is easier to control for the small ~1oz milk pour a cortado needs than a full-size 20oz pitcher.
- Pointed spout gives enough precision to pour a clean cortado without splashing the small glass.
- Same heavy stainless build as the larger Rattleware pitchers, just scaled for smaller drinks.
Most home baristas find the smaller pitcher shows up within the week — try Amazon Prime free for 30 days for two-day shipping on it and the rest of your gear.
Step 3: Pour into the Gibraltar glass
Pour the steamed milk into the glass with the shot, moving slowly enough that the milk folds under the crema rather than blasting through it. Because the ratio is 1:1 and the glass only holds 4 to 4.5oz total, there’s no room for a long, showy pour like you’d use for latte art — a cortado is usually done in one smooth motion. If you don’t own a dedicated Gibraltar glass, any small heatproof glass around 4-5oz works; the Libbey Gibraltar rocks glass just became the specialty-coffee standard because cafes needed something that physically prevented over-pouring milk. See our best espresso cups guide if you want a proper set.
No steam wand? Use a frother carefully
Super-automatics, pod machines, and manual lever makers often skip a steam wand entirely, but a cortado’s small milk volume is actually one of the easier drinks to fake with a handheld frother. Submerge a whisk frother deep in the milk and pulse in short bursts rather than whisking at the surface — surface whisking builds the foam a cortado doesn’t want. An automatic jug frother works too if it has a low-foam or “latte” setting rather than a cappuccino setting. Our best milk frother guide covers models that handle small volumes without over-aerating, and how to froth milk without a frother if you have neither a wand nor a dedicated frother on hand.
Cortado, by the numbers
- 1:1 — the espresso-to-steamed-milk ratio a cortado is built on, per Specialty Coffee Association convention, versus a latte’s 1:3-plus.
- 4-4.5oz — the Gibraltar glass size specialty cafes standardized on, which caps milk volume to keep the ratio honest.
- ~1oz — typical shot size (double ristretto or single) and roughly matching milk volume for one cortado.
- 130-140°F — target milk temperature, slightly cooler than a latte’s 140-155°F range since the small volume heats quickly.
The bottom line
A cortado comes down to three things a latte or cappuccino don’t share: a strict 1:1 espresso-to-milk ratio, a small 4-4.5oz Gibraltar glass that enforces it, and a near-foamless steaming technique that skips the surface-aeration stretch entirely. Get the shot right first, steam a thin glossy skin instead of a foam cap, and pour slowly into the glass — that’s the whole drink. For the machine that pulls the shot this all starts from, see our best espresso machine guide, or cortado vs cappuccino if you’re still deciding which small milk drink fits your taste.