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Gin and Tonic

Gin and tonic water over ice with lime — a bittersweet, botanical two-ingredient classic.

Difficulty
easy
Prep time
2 min
Strength
10% ABV
Glassware
Highball glass (or copa glass)
Base
gin
Serves
1

Ingredients

  • Gin
    50ml
  • Tonic water

    To top

    150ml

Garnish: Lime wedge

Scale for a party

Method

  1. Fill a highball glass with ice.
  2. Add the gin.
  3. Top with tonic water and stir once, gently.
  4. Squeeze a lime wedge over the drink and drop it in.

Equipment

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

  • Jigger

    Household swap: A tablespoon measure (1 tbsp ≈ 15ml).

  • Bar spoon

    Household swap: Any long-handled spoon works for a quick 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 Tonic Water

    Best substitute: Soda Water

    This is the lengthener in this drink.

    Flavour impact: Turns this into a Gin Rickey-style drink — drier, with none of tonic's quinine bitterness or sweetness.

    What changes

    Soda Water moves the drink a long way — less sweetness, less bitterness and less intensity. This is worth making deliberately rather than as a stand-in.

    Sweetness
    Less sweetness leaves the acid and the spirit more exposed, so the drink will taste sharper and drier than it should.
    Bitterness
    Losing bitterness makes the drink rounder and more approachable, and takes away the structure that stopped it tasting like squash.
    Intensity
    A milder ingredient gets buried by whatever else is in the glass, and the drink loses the thing it was named for.
    Character
    Both are fizzy, and you lose bitter, sweet-edged and quinine, and you gain neutral, clean and light. 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.
    • A dash of bitters restores some of the backbone without changing anything else.
    • Increase the measure, or accept a gentler drink and reduce the components competing with it.
    Moderate confidenceA workable but noticeably different substitute; it loses the drink's signature bittersweet edge.Makes a different drinkBecomes a variation

Make it better

  • Add the gin first, then the tonic last, poured gently down the side of the glass to keep as much fizz as possible.
  • Match the tonic to the gin — a citrus-forward gin pairs well with a classic tonic, while a more floral or herbal gin can handle a more delicate, less bitter one.
  • Use plenty of ice, filled right to the top of the glass — it keeps the drink cold without needing to over-dilute it.
  • Add the carbonated mixer last, after shaking or stirring the rest, and pour gently to keep as much fizz as possible.

Rescue this drink

Tastes flat
Use a freshly opened bottle of tonic water and pour it gently rather than stirring hard.
Too bitter
Choose a milder, more classic tonic rather than a heavily botanical or 'dry' style, or increase the tonic-to-gin ratio slightly.
Tastes weak or watery
Fill the glass fully with ice before pouring — too little ice melts fast and dilutes the drink.
Too sweetgeneral guidance
Add a small amount of fresh citrus juice or a dash of bitters to bring the balance back — adjust gradually and taste as you go.
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 tonic water when you pour.

Tonic water:
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

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

Dry

DrySweet

Barely sweetened. The spirit and the acid are what you taste.

What drives it: Tonic water carries the most sugar into the glass.

Gentle

SoftSharp

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

No single ingredient accounts for this — it comes from the combination rather than from one bottle.

Bitter

GentleBitter

Bitter enough to be one of the reasons you chose this drink.

What drives it: Tonic water provides the bitterness.

Very light

LightRich

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

No single ingredient accounts for this — it comes from the combination rather than from one bottle.

Very sparkling

StillSparkling

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

What drives it: Tonic water carries the carbonation.

Bold

DelicateBold

Bold. This drink is the loudest thing on the table.

What drives it: Gin is the most concentrated thing in the glass.

What you smell first

  • Citrus peelLeads

    From Gin, Lime wedge

  • Juniper and botanicalsLeads

    From Gin

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 bitter

    Likely cause
    Tonic water is doing this deliberately, but bitterness also *builds* across a drink rather than announcing itself — the last mouthful is more bitter than the first even though nothing changed.
    What to change
    Lengthen it slightly, or add a small amount of sweetener. Do not add more of anything sour; acid sharpens bitterness rather than covering it.
    What that does
    The bitterness softens and the drink gets longer. If you were hoping to keep it short and strong, this is the trade you are making.
  • 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
    Tonic water 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 citrus peel and juniper and botanicals, 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 2 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
1/5
Sourness
1/5
Bitterness
3/5
Strength
3/5
Fruitiness
0/5
Freshness
4/5
Creaminess
0/5
Smokiness
0/5

Nutrition & alcohol

Estimate onlyBased on a standard 50ml gin pour at 40% ABV; tonic water sugar content varies by brand between regular and 'light' styles.
Calories
150 kcal
Sugar
14 g
Carbohydrates
15 g
Alcohol units (UK)
2
US standard drinks
1.13
ABV
10%
Serving size
200 ml
Show calculation assumptions

Source: Calculated from standard measures

Calorie breakdown: ~110 kcal from alcohol, ~40 kcal from sugar and mixers.

Likely range: 113188 kcal, reflecting the confidence level above — not a lab-measured figure.

Assumes 50ml gin at 40% ABV topped with 150ml regular (non-diet) tonic water.

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

Variations

  • Prefer it alcohol-free?

    Try the Garden Highball, built to carry the same flavour without any alcohol.

  • Spanish-Style G&T

    Serve in a large copa glass with extra ice and aromatic garnishes like rosemary, star anise or grapefruit peel.

  • Pink Gin and Tonic

    Add a dash of Angostura bitters for a warmer, spiced-pink take.

What kind of drink this is

The structure behind the recipe

A built build: a long and lengthened gin-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

    Gin

  • Lengthener

    Tonic water

Drinks built this way are collected as the Highball family.

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 glassHow 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 (or copa glass) · 200ml

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 it comes from

Origin and family

Origin of the Gin and Tonic

British colonial-era drink, originating from mixing gin with quinine tonic used to prevent malaria in 19th-century India.

Family

Highball

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

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 →

Questions people ask

What's the right gin-to-tonic ratio?
See the ingredients above for this build's measures. If it lands too bitter for you, the ratio is the first thing to adjust — see "Rescue this drink" above, which covers nudging it toward more tonic.
What's the alcohol-free version?
Garden Highball — a botanical alcohol-free build that keeps the long, bittersweet, over-ice character rather than just serving tonic on its own.
Why does my G&T go flat so quickly?
See "Rescue this drink" above — it's almost always tonic that's been open too long, or stirring hard enough to knock the carbonation out.

Use up your ingredients

Bought a bottle just for this? Here's what else it's good for.

Scale this for a party

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

Recipe confidence

An extremely well-known, widely documented two-ingredient classic.

High confidence