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Cuba Libre

Rum, cola and a squeeze of lime, built over ice — simple, but the lime is what makes it work.

Difficulty
easy
Prep time
3 min
Strength
9.1% ABV
Glassware
Highball glass
Base
rum
Serves
1

Ingredients

  • Gold or white rum
    50ml
  • Fresh lime juice
    10ml
  • Cola

    To top

    120ml

Garnish: Lime wedge

Scale for a party

Method

  1. Fill a highball glass with ice.
  2. Squeeze the lime juice in and drop the spent lime shell into the glass.
  3. Add the rum.
  4. Top with cola and stir gently once to combine.
  5. Garnish with a fresh lime wedge.

Equipment

Don't have everything? Here's what works instead.

  • Citrus juicer

    Household swap: Squeeze the lime by hand directly into the glass.

  • Bar spoon

    Household swap: Any long-handled spoon works for a single gentle stir.

Missing an ingredient?

Each swap below says what it changes and how to correct for it, so you can decide whether you are making this drink or a neighbouring one.

  • Instead of Gold Rum

    Best substitute: White Rum

    This is the base in this drink.

    Flavour impact: Makes for a lighter, cleaner drink with less caramel depth than gold rum.

    What changes

    Expect less sweetness. Still a good drink, and a slightly different one.

    Sweetness ↓
    Less sweetness leaves the acid and the spirit more exposed, so the drink will taste sharper and drier than it should.
    Character
    you lose caramel, oaky, medium-bodied and warm, and you gain clean, light, subtly sweet and sugarcane-forward. Numbers can't see this: two ingredients can be identically sour and still smell nothing alike.

    To correct for it

    • Add a little more syrup, a small amount at a time, until the edges come back together.
    High confidenceBoth are standard choices for this drink and swap in easily.Shifts the drink

Make it better

  • Use fresh lime juice, not bottled — it's a small amount, but it's the ingredient that actually defines this drink against a plain rum and coke.
  • Drop the squeezed lime shell into the glass along with the juice; it adds a bit of aromatic oil as you drink.
  • Stir gently, not vigorously — you don't want to knock all the fizz out of the cola.
  • Add the carbonated mixer last, after shaking or stirring the rest, and pour gently to keep as much fizz as possible.
  • Adjust sweetness gradually and taste as you go — it's easy to add more syrup, impossible to take it out.

Rescue this drink

Tastes flat or too sweet
You've likely skipped or skimped on the lime — add a proper 10ml squeeze, not just a garnish wedge.
Goes flat quickly
Use fresh, cold cola and stir gently rather than vigorously.
Tastes weak
Use fewer, larger ice cubes so the drink dilutes more slowly.
Too sourgeneral guidance
Add a little more sweetener (simple syrup or the cocktail's usual sweetening ingredient), a small amount at a time.
Served too warmgeneral guidance
Chill the glass, ice and every ingredient ahead of time — a warm pour is the fastest way to lose a cold drink's balance. For one serving, there's no real fix beyond rebuilding it properly chilled; for a batch, keep everything refrigerated until the moment of serving and add ice last.

Make ahead & storage

Batch the base, finish at serving

Batch the base days ahead and add fresh lime juice and cola when you pour.

Fresh lime juice:
Fresh citrus loses its aroma within hours and turns dull. Squeeze it on the day.
Cola:
Carbonated — it goes flat in a bottle, and there is no way to put the fizz back.

What it tastes like

The taste, and what drives it

sweet, gentle, very light, sparkling — a long and lengthened drink served long, over ice.

Sweet

Dry → Sweet

Openly sweet, and balanced by something else rather than hidden.

What drives it: Cola — carries the most sugar into the glass.

Gentle

Soft → Sharp

A trace of acidity, there to lift rather than to be noticed.

What drives it: Fresh lime juice — supplies the acidity.

Very light

Light → Rich

Almost weightless in the mouth — closer to a long soft drink than to a sipper.

What drives it: Gold or white rum — adds most of the weight.

Very sparkling

Still → Sparkling

Carbonated, which lifts the aromatics and makes the drink taste drier than its sugar content alone would suggest.

What drives it: Cola — carries the carbonation.

Moderate

Delicate → Bold

Moderate: assertive enough to hold its own, mild enough for a second.

What drives it: Gold or white rum — is the most concentrated thing in the glass.

What you smell first

  • Caramel and molassesLeads

    From Gold or white rum, Cola

  • Baking spiceLeads

    From Cola

  • Citrus peelLeads

    From Fresh lime juice, Lime wedge

  • Oak

    From Gold or white rum

Every aroma here comes from the liquid itself; nothing is layered on top.

How it was worked out

Each reading comes from the recipe's own recorded taste scores combined with what each ingredient contributes, weighted by how much of it is in the glass. Almost everything in this drink has detailed ingredient data behind it.

How balance actually works →

If it isn't right

What goes wrong with this drink, and why

Only the faults this particular recipe is actually prone to — each with the likely cause, the adjustment, and what the adjustment costs you.

The fizz is the last thing in, and the first thing lost

Worth knowing

Carbonation escapes to warmth, agitation and anything it can cling to — pulp, sugar crystals, a dry glass wall.

How to handle it: Chill the mixer hard, pour it against the inside of the glass, add it last, and stir once at most.

  • It's too sweet

    Likely cause
    Cola is carrying the sugar here, and it is the easiest thing in the drink to over-pour — syrup clings to a jigger and a "splash" is rarely the same twice.
    What to change
    Cut cola by about a third and rebuild. If it is already made, a squeeze of citrus is faster than starting again.
    What that does
    It will taste drier and slightly thinner — sugar carries body as well as sweetness, so you lose a little weight along with it.

  • It tastes weak

    Likely cause
    Usually dilution rather than measurement: building in the glass adds water as it chills, and wet or small ice adds far more of it than cold, large ice does.
    What to change
    Use larger, colder ice and work faster. Adding more spirit fixes the symptom and unbalances everything else.
    What that does
    The drink gains definition without gaining sugar. It will also read as slightly sharper, which is what 'more presence' usually means in practice.

  • It's gone flat

    Likely cause
    Cola loses gas to warmth, to agitation and to anything it can nucleate against — pulp, sugar crystals, a dry glass.
    What to change
    Chill the mixer properly, add it last, pour it against the inside wall of the glass, and stir once at most.
    What that does
    The bubbles last, which also makes the drink taste drier — carbonation contributes a real acidity of its own on top of the lift.

  • It doesn't smell of anything

    Likely cause
    This drink's aroma comes from caramel and molasses and baking spice, carried in the liquid. Serving it too cold suppresses that: volatile compounds do not leave a very cold drink.
    What to change
    Let it sit for a minute before drinking, and use a glass that narrows towards the rim to concentrate what does escape.
    What that does
    More of the aroma escapes and the drink reads as more intense. The cost is temperature: a drink left to warm also dilutes faster, so this is a trade against how long it stays right.

  • It tastes one-dimensional

    Likely cause
    With 3 components there is nowhere for complexity to hide — a long and lengthened drink is exposed by design, so a dull one is usually a dull ingredient rather than a missing step.
    What to change
    Change the quality of what is there before adding anything new: fresh citrus rather than bottled, a better base bottle, a dash of bitters. Bitters add layers at a scale nothing else matches.
    What that does
    More going on at the same strength and sweetness. Adding a whole extra ingredient instead usually produces a muddier drink rather than a deeper one.

Taste profile

Sweetness
3/5
Sourness
1/5
Bitterness
0/5
Strength
2/5
Fruitiness
1/5
Freshness
3/5
Creaminess
0/5
Smokiness
0/5

Nutrition & alcohol

Estimate onlyCola sugar content is consistent, but pour sizes for rum vary widely by bar.
Calories
163 kcal
Sugar
13 g
Carbohydrates
14 g
Alcohol units (UK)
2
US standard drinks
1.13
ABV
9.1%
Serving size
220 ml
Show calculation assumptions

Source: Calculated from standard measures

Calorie breakdown: ~111 kcal from alcohol, ~52 kcal from sugar and mixers.

Likely range: 122–204 kcal, reflecting the confidence level above — not a lab-measured figure.

Based on 50ml gold rum at 40% ABV topped with 120ml regular cola and a fresh lime squeeze.

These figures are estimates, not laboratory measurements — individual tolerance to alcohol varies. See our responsible drinking guidance.

Variations

  • Dark 'n' Stormy-style Libre

    Swap the cola for ginger beer for a spicier, less sweet highball.

What kind of drink this is

The structure behind the recipe

A built build: a long and lengthened rum-based drink, served long, over ice — sparkling in the mouth.

Long and lengthened

A short measure stretched with a mixer or juice — the drink's length, not its concentration, is the point of it.

  • Base

    Gold or white rum

    Spirit in the largest measure — read as the base.

  • Sour element

    Fresh lime juice

    A short, sharp measure — recorded acidity 5/5, and nothing sharper is poured short, so this is the sour element.

  • Lengthener

    Cola

    A long measure of mixer — this is what makes the drink long.

Drinks built this way are collected as the Highball family.

3 components' roles areworked out from the ingredient's category and recorded taste attributes rather than set by hand — the reasoning is shown above so you can disagree with it.

Technique

built

Components are poured into the serving glass over ice and stirred once, or not at all. Dilution happens while you drink rather than before.

The drink changes as you go: strongest at the first sip, longest and most diluted at the last. That drift is a feature of a long drink and a fault in a short one.

What it ruins: Nothing, but it cannot properly combine anything viscous — a syrup poured last will sit at the bottom.

Everything about building in the glass →How the technique works →

Dilution

In the glass, as you drink

Water from ice typically makes up around 15% of the finished drink for a built build (commonly 10–20%). Dilution is an ingredient here, not a side effect.

Why dilution is an ingredient →

Served

Long, over ice

Highball glass · 220ml

Served on ice, so it keeps chilling in the glass. A larger, colder, slower drink than the same spirits served straight up.

Texture and aroma

Sparkling

Carbonation lifts aromatics and adds a slight acidity of its own, which is why a long drink can taste drier than its sugar content suggests.

No dedicated aromatic component — what you smell is the spirit itself, which is a deliberate choice in a drink this spare.

Where to go from here

Each of these is here because of something specific about this drink, not as a standard set of links.

Where it comes from

Origin and family

Origin of the Cuba Libre

Cuban highball dating to the early 20th century, tied to the introduction of Coca-Cola to Cuba.

Family

Highball

1 part spirit · 2–4 parts mixer — built in the glass over a full load of ice.

1800s–1919Other pre-prohibition drinks →

On drinks history

Cocktail origin stories are frequently repeated and rarely evidenced. Our history section separates what is documented from what is folklore rather than picking whichever version reads best.

History and culture →

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Related tools

Scale this for a party

Work out bottles, mixers, ice and total alcohol units for any number of guests.

Recipe confidence

Simple, well-documented classic with consistent proportions.

High confidence