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A gibraltar is a cortado served in the glass it was named after: a double shot of espresso with roughly an equal amount of steamed milk, poured into the small faceted Libbey Gibraltar rocks glass, about 4.5 oz. Same drink as a cortado, different name and vessel. The order took hold in San Francisco specialty coffee in the early 2000s as a staff drink at Blue Bottle, spread through West Coast cafes, and stuck, so whether your menu says gibraltar or cortado mostly tells you where the owner learned coffee.
Gibraltar vs cortado vs cortadito vs flat white
| Gibraltar | Cortado | Cortadito | Flat white | |
|---|---|---|---|---|
| Build | Double shot, equal steamed milk | Espresso cut with equal steamed milk | Cuban espresso with sweetened milk | Double shot, about 1:2 milk |
| Size | About 4.5 oz | About 4 to 4.5 oz | Small, often 3 to 4 oz | 6 to 8 oz |
| Sweetened | No | No | Yes, sugar or condensed milk | No |
| Signature | The faceted glass | Spanish "cut" espresso | Cuban cafe staple | Microfoam surface |
Why baristas invented a drink around a water glass
The Libbey Gibraltar is a cheap, sturdy rocks glass that most cafes already stocked. Baristas dialing in shots wanted something between straight espresso and a milk-heavy drink, small enough to taste the coffee, milky enough to drink fast between orders, and the glass on hand set the size. The equal-parts ratio follows from the vessel: a double shot plus enough steamed milk to fill 4.5 oz lands at roughly one to one. It moved from behind the counter to the menu because regulars kept asking what the staff were drinking.
Gibraltar or cortado: does the name matter?
Functionally no. A cortado is the older Spanish drink, espresso "cut" with warm milk, and the gibraltar is the American specialty-coffee take served in that specific glass with lightly textured milk rather than flat warm milk. Some shops steam the gibraltar's milk a touch glossier, closer to flat white texture. If a menu lists both, expect the gibraltar to lean specialty in presentation; the full comparison lives in how to make a cortado and cortado vs cortadito.
Caffeine and the home version
Built on a double shot, a gibraltar carries about 126mg of caffeine at the USDA figure of roughly 63mg per 1 oz shot. At home: pull a double, steam 2 to 3 oz of milk with just enough texture to gloss the surface, and pour into the smallest glass you own. The actual Gibraltar glass is inexpensive and makes the ratio automatic; full steps with steaming notes are in our gibraltar recipe.
Caffeine varies with dose and shot length. The FDA considers up to 400mg per day generally safe for healthy adults. Information, not advice.
Related reading
FAQ
What is a gibraltar coffee? A double shot of espresso with roughly equal steamed milk served in a 4.5 oz Libbey Gibraltar rocks glass. It is the American specialty-coffee name for a cortado, popularized in San Francisco.
Is a gibraltar the same as a cortado? Effectively yes. Same equal-parts build; the gibraltar is defined by its glass and usually gets slightly more textured milk than a traditional Spanish cortado.
Why is it called a gibraltar? After the Libbey Gibraltar glassware line it is served in. The glass came first; the drink was named for the vessel baristas were drinking it from.
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