How to Make a Cortado: Recipe and Ratio
A cortado is an espresso (single or double) cut with an equal part of lightly steamed milk. The coffee-to-milk ratio is 1:1, for a served volume of about 90 to 130 ml in a small glass. Its signature is silky, warm milk with very thin foam or almost none, and coffee that is still firmly in charge. That tight balance is what sets it apart from the macchiato (more coffee), the flat white (more milk and foam) and the piccolo.
- Coffee base: single or double espresso, about 30 to 60 ml
- Milk: 30 to 60 ml of lightly steamed milk, almost no foam
- Coffee-to-milk ratio: 1:1, equal parts
- Serving volume: 90 to 130 ml in a small glass
- Milk temperature: 60 to 65 degrees Celsius, never boiled
- Total time: about 4 minutes
What a cortado is
The cortado comes from Spain. Its name comes from the Spanish verb cortar, to cut, because the milk literally cuts the acidity and intensity of the espresso. The drink began in the Basque Country, spread across the Iberian Peninsula from Galicia to Portugal, and travelled on to Latin America. It is one of the tightest milk coffees in the specialty repertoire, and everything about it is a question of measure.
What defines a cortado is the 1:1 ratio. In equal parts, the espresso and the steamed milk balance each other out with neither taking over. The milk is not there to lengthen the coffee but to round it off. You stay on a small volume, roughly 90 to 130 ml depending on whether the base is a single or double shot, usually served in a small clear glass. That glass is not an accident: it shows off the clean line between coffee and milk before the pour blends them.
The other signature is the milk. Unlike a cappuccino or a flat white, a cortado asks for no worked-up foam. You want barely textured milk, silky and warm, with very thin foam or almost none. In the United States you will also meet the term Gibraltar. That is a cortado served in a 4.5 oz Libbey Gibraltar glass, about 130 ml. The story goes back to San Francisco Bay Area cafes in the mid-2000s, where baristas began serving equal parts espresso and milk in that exact glass and named the drink after it. The recipe is the same; Gibraltar names the vessel first.
Ingredients and equipment
For a cortado at home the list is minimal. It is the accuracy of the shot and the smoothness of the milk that do all the work.
- 18 to 20 g of freshly ground coffee for espresso, fine grind (double basket)
- 60 ml of cold whole milk (whole milk steams to a silky texture most easily; a barista oat drink also works)
- Filtered water for the machine
- An espresso machine with a steam wand, a milk jug and a small glass or cup of 90 to 130 ml
- Scales and ideally a thermometer to target 60 to 65 degrees Celsius
The step-by-step method
Success comes down to two moves: a clean extraction and milk heated without dragging in air. The cortado is quick, because there is no foam to structure as on a cappuccino.
- Dial in the grind and dose. Weigh 18 to 20 g of freshly ground coffee for a double basket, with a fine espresso grind. Spread the grounds evenly and tamp level, without forcing.
- Pull the espresso. Pull a double espresso, about 60 ml, in 25 to 30 seconds. Catch the shot straight in the small 90 to 130 ml glass. An intense, syrupy coffee gives the drink its backbone; for a shorter cortado, a single shot of about 30 ml works too.
- Steam the milk without frothing. Pour about 60 ml of cold milk into the jug. Hold the steam wand just under the surface for a split second to add a touch of air, then submerge it to spin a gentle whirlpool that heats without inflating. Cut the steam at around 60 to 65 degrees Celsius. The aim is silky, warm milk with very thin foam, not a thick head of foam.
- Cut the espresso. Tap the jug briefly and swirl the milk smooth. Pour it slowly and steadily over the espresso until you reach equal parts, about 1:1. You can lay a small latte art pattern if the texture allows, but a cortado is perfectly happy without art; what matters is the balance. Serve at once.
Cortado vs macchiato vs flat white vs piccolo: the table
All four drinks start from the same pairing of espresso and milk, but differ in serving volume, milk share and therefore coffee intensity. The figures below are common specialty coffee references.
| Drink | Serving volume | Coffee-to-milk ratio | Profile |
|---|---|---|---|
| Cortado | 90 to 130 ml | about 1:1 | strong coffee, silky milk, almost no foam |
| Macchiato | 60 to 80 ml | coffee dominant, milk as a dash | espresso marked with a touch of milk |
| Piccolo | 100 to 120 ml | short shot lengthened with milk | ristretto softened, thin layer of textured milk |
| Flat white | 150 to 160 ml | about 1:3 to 1:4 | more milk, fine integrated microfoam |
In short: the cortado sits between the macchiato and the flat white. Milkier than the macchiato, tighter and more coffee-led than the flat white, it is known by its 1:1 ratio and its lack of worked-up foam. The piccolo looks similar in size, but starts from a ristretto and leans more on a thin layer of textured milk.
Frequently asked questions about the cortado
What is the ratio of a cortado?
A cortado uses a 1:1 coffee-to-milk ratio, meaning equal parts espresso and steamed milk. In practice a double espresso of about 60 ml is cut with roughly 60 ml of barely textured milk, for a served volume of around 120 to 130 ml. With a single shot you drop closer to 90 ml. The foam stays very thin, almost none at all.
What is the difference between a cortado and a macchiato?
A macchiato is an espresso simply marked with a small spoon of milk, about 60 to 80 ml in total, where the coffee clearly leads. A cortado holds far more milk, in equal parts with the coffee, for a volume of 90 to 130 ml and a rounder profile. The cortado softens the espresso without drowning it, where the macchiato keeps it almost neat.
Are a cortado and a Gibraltar the same thing?
A Gibraltar is a cortado served in a 4.5 oz Libbey Gibraltar glass, about 130 ml. The name took off in San Francisco Bay Area specialty cafes in the mid-2000s. In the United States cortado and Gibraltar are often used interchangeably: the same equal-parts recipe, with Gibraltar referring first to the glass it is poured in.
Do you froth the milk for a cortado?
Not the way you would for a cappuccino. A cortado wants lightly steamed milk, heated to about 60 to 65 degrees Celsius, with very thin foam or almost none. You are after silky, warm milk that melts into the coffee, not a thick layer of foam sitting on top.
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