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Scale a cocktail recipe without silently changing it

Multiply measured ingredients by the number of servings, then handle ice, carbonation and final preparation separately.

Batch arithmetic begins with a recipe you already trust. If one serving contains 30 ml of an ingredient, six servings need 180 ml of that ingredient. The scale factor is target servings divided by the servings in the original recipe.

Use the calculator for the quantities you enter. It does not invent a recipe, estimate alcohol strength, choose dilution or decide which ingredients should be mixed in advance. Those are separate preparation decisions.

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Keep the recipe and multiplier visible

Write down the original serving count and use one unit for all liquids before multiplying. As a concrete reference, the IBA Negroni specifies equal 30 ml measures of gin, bitter Campari and sweet red vermouth. Four such portions require 120 ml of each, before ice and the stated preparation.

InputWhat to preserve
Original recipeIngredient, quantity and unit
Serving changeOne shared multiplication factor
PreparationIce, garnish and technique remain explicit

Separate scaling from finishing

A larger amount is not automatically ready to pour. Shaking and stirring add water and change temperature; the arithmetic tool does not reproduce either process. Carbonated components need their own finishing plan. Keep garnish counts, glass sizes and any last-minute steps beside the batch note rather than hiding them in the total volume.

Siplore gives you measured recipes and unit choices for planning a home-bar menu. Check the actual recipe before scaling and make a small test serving before preparing a group batch. Nothing on this page transfers your calculation into My Bar or a saved recipe.

Questions, answered

Does the calculator add dilution water?

No. It multiplies your entered quantities. Use the recipe's technique and a separately tested dilution plan.

Can I replace an ingredient and keep the same result?

A substitution changes the drink. Record it as a new version and test a single portion rather than treating it as arithmetic.

Sources & method

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Keep going in Siplore

Match the bottles in My Bar with drinks you can make. · Browse cocktail and alcohol-free recipes with exact measures. · Search by ingredients and switch between ml, oz and cl.

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