Batch Cocktail Calculator

Servings	12
Spirit per serving	60 ml
Sweetener per serving	30 ml
Citrus per serving	30 ml

Servings

Spirit per serving

60 ml

Sweetener per serving

30 ml

Citrus per serving

30 ml

Last updated: 2026-06-22

Batch Cocktails

Most classic cocktails follow a simple, repeatable ratio, which makes them easy to scale for a crowd. The sour family — a base spirit, a sweet component, and a sour component — is the textbook example, built on the familiar 2:1:1 ratio. That is 60 ml of spirit, 30 ml of sweetener, and 30 ml of citrus per drink.That is 2 oz of spirit, 1 oz of sweetener, and 1 oz of citrus per drink. A margarita, a whiskey sour, a daiquiri, and a gimlet are all variations on this single template, so the same scaling math covers all of them.

Scaling the recipe

To batch a cocktail, multiply each ingredient by the number of servings $N$ , then add the parts together for the total batch volume:

\begin{aligned} V_{\text{spirit}} &= N \times \text{spirit per serving} \\ V_{\text{total}} &= V_{\text{spirit}} + V_{\text{sweet}} + V_{\text{sour}} \end{aligned}

Spirits are sold in standard 750 ml bottles, so the number of bottles is the total spirit divided by 750 ml, rounded up:

\text{bottles} = \left\lceil \frac{V_{\text{spirit}}}{750\ \text{ml}} \right\rceil

Worked example — 20 servings of a 60 / 30 / 30 ml sour:

\begin{aligned} V_{\text{spirit}} &= 20 \times 60 = 1200\ \text{ml} \\ V_{\text{sweet}} &= 20 \times 30 = 600\ \text{ml} \\ V_{\text{sour}} &= 20 \times 30 = 600\ \text{ml} \\ V_{\text{total}} &= 1200 + 600 + 600 = 2400\ \text{ml} = 2.4\ \text{l} \end{aligned}

The spirit works out to $\lceil 1200 / 750 \rceil = 2$ bottles.

Worked example — 20 servings of a 2 / 1 / 1 oz sour:

\begin{aligned} V_{\text{spirit}} &= 20 \times 2 = 40\ \text{oz} \\ V_{\text{sweet}} &= 20 \times 1 = 20\ \text{oz} \\ V_{\text{sour}} &= 20 \times 1 = 20\ \text{oz} \\ V_{\text{total}} &= 40 + 20 + 20 = 80\ \text{oz} \end{aligned}

The spirit works out to $\lceil 1200 / 750 \rceil = 2$ bottles, since 40 oz is about 1183 ml.

Dilution

The amounts above are the undiluted base recipe. When you shake or stir a single cocktail over ice, melting ice adds roughly 20–25 % of the drink's volume in water, which softens the alcohol and balances the flavour. A pre-batched drink served straight from the fridge skips that step, so it tastes harsh and too strong. The fix is to stir water into the batch — about 20–25 % of the base volume. For the 2.4 l80 oz example above, that is roughly 500–600 ml of water16–20 oz of water. This calculator reports the undiluted base recipe, so add the dilution water separately once everything is measured.

Timing

Batches that contain fresh citrus are best made the day of the event, because lemon and lime juice lose their bright character within about a day. A reliable approach is to mix the spirit and sweetener in advance, then stir in the fresh juice and the dilution water shortly before guests arrive.

For ice planning, see the Party Ice Calculator, and for an overall drinks estimate across beer, wine, and cocktails, see the Party Drinks Calculator.

Frequently Asked Questions (FAQ)

How do I batch a cocktail?

Pick a recipe whose ingredients stay constant from drink to drink — sours (spirit, sweetener, citrus) are ideal. Multiply each ingredient by the number of servings, combine everything in a large container, and stir to mix. For example, a 60 / 30 / 30 ml sour scaled to 20 servings becomes 1200 ml spirit, 600 ml sweetener, and 600 ml citrus. Chill thoroughly before serving and stir again, as syrups can settle.

Pick a recipe whose ingredients stay constant from drink to drink — sours (spirit, sweetener, citrus) are ideal. Multiply each ingredient by the number of servings, combine everything in a large container, and stir to mix. For example, a 2 / 1 / 1 oz sour scaled to 20 servings becomes 40 oz spirit, 20 oz sweetener, and 20 oz citrus. Chill thoroughly before serving and stir again, as syrups can settle.

Should I add water to a batched cocktail?

Yes, if you are serving the batch pre-chilled rather than shaking each drink. Shaking or stirring over ice dilutes a single cocktail by roughly 20–25 % of its volume, and a pre-batched drink misses that step. Stirring in about 20–25 % water (for a 1800 ml base batch, around 360–450 ml) reproduces that dilution. This calculator gives the undiluted base recipe, so add the water separately once you have measured everything out.

Yes, if you are serving the batch pre-chilled rather than shaking each drink. Shaking or stirring over ice dilutes a single cocktail by roughly 20–25 % of its volume, and a pre-batched drink misses that step. Stirring in about 20–25 % water (for a 60 oz base batch, around 12–15 oz) reproduces that dilution. This calculator gives the undiluted base recipe, so add the water separately once you have measured everything out.

How far ahead can I batch cocktails?

Spirit-only batches without citrus or fresh juice keep for weeks if sealed and refrigerated. Once fresh lemon or lime juice is added, flavour starts to fade within about 24 hours and the batch is best used the same day. A practical approach is to combine the spirit and sweetener ahead of time, then stir in the fresh citrus and any dilution water shortly before the party starts.

Disclaimer

Amounts are estimates for planning a base recipe and do not include ice melt or dilution. Drink responsibly and follow local laws on the sale and service of alcohol.

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Batch Cocktail Calculator

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Batch Cocktails

Scaling the recipe

Dilution

Timing

Frequently Asked Questions (FAQ)

Disclaimer

Recommended Next

Party Drinks Calculator

Party Ice Calculator

Keg Servings Calculator

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