What Is an Irish Coffee? History, Classic Ratio and How to Float the Cream
An Irish coffee is hot brewed coffee sweetened with brown sugar, mixed with Irish whiskey and topped with a layer of lightly whipped cream that floats on top. You drink the hot coffee through the cold cream. It's credited to chef Joe Sheridan at Foynes, Ireland, in the 1940s and later made famous in San Francisco.
What it is
A warming coffee cocktail with four ingredients: hot coffee, Irish whiskey, brown sugar and cream. The cream isn't stirred in — it sits in a neat white band on top of the dark coffee, so every sip passes through cool cream into hot, sweet, boozy coffee.
Where it comes from
The best-known story credits Joe Sheridan, a chef at the flying-boat terminal at Foynes in the west of Ireland, in the 1940s. He is said to have added whiskey to coffee to warm up cold, tired passengers. In the early 1950s, a travel writer brought the idea to the Buena Vista Café in San Francisco, which helped make it famous worldwide.
What it tastes like
Rich and warming: roasty coffee, caramel sweetness from brown sugar, the malty warmth of whiskey, and a cool, silky finish from the cream.
Classic recipe
| Ingredient | 1 glass (~240 ml) |
|---|---|
| Hot, freshly brewed coffee | 120–150 ml |
| Irish whiskey | 40 ml |
| Brown sugar (or demerara syrup) | 2 tsp |
| Heavy cream, lightly whipped | 30–40 ml |
- Preheat the glass with hot water, then empty it.
- Add the brown sugar and a little hot coffee; stir until dissolved. Sugar matters — it makes the coffee dense enough to support the cream.
- Add the whiskey and the rest of the coffee, leaving about 2 cm at the top.
- Lightly whip the cream — shake it in a jar for 15–20 seconds or whisk briefly until it thickens slightly but still pours.
- Pour the cream slowly over the back of a warm spoon so it floats.
- Don't stir. Drink through the cream.
The secret: lightly whipped cream
| Cream | Result |
|---|---|
| Unwhipped | Sinks and mixes into the coffee |
| Lightly whipped (pourable, slightly thick) | Floats in a clean layer ✓ |
| Stiffly whipped | Sits on top like a lump, doesn't blend in the mouth |
Choosing the coffee
Use a medium or medium-dark roast brewed a little strong — about 1:14. French press or drip both work; see our French press ratio guide. Avoid very light, acidic roasts, which clash with whiskey.
Non-alcoholic version
Replace whiskey with a splash of vanilla syrup or a few drops of non-alcoholic whiskey alternative, and keep the sugar and floated cream.
Drink responsibly
Irish coffee combines alcohol and caffeine. Drink in moderation and never drive after drinking.
Similar drinks
- Carajillo — espresso with brandy, rum or Licor 43
- Einspänner — Viennese coffee topped with whipped cream (no alcohol)
- Affogato — espresso over ice cream
Frequently asked questions
Why does the cream float on Irish coffee?
Sugar makes the coffee denser and lightly whipped cream is lighter, so it sits on top when poured gently.
What whiskey is used in Irish coffee?
Irish whiskey, which is typically smooth and slightly sweet.
Should you stir Irish coffee?
No — you drink the hot coffee through the cool cream layer.
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