Cocktail Batch Scaling Calculator

Scaling a cocktail recipe from a single serving to a batch for a party is one of the most useful skills in home entertaining. A properly batched cocktail means you spend less time behind a makeshift bar and more time enjoying the party.

How to Scale Cocktail Recipes

The basic process is straightforward: multiply every ingredient by the number of servings. However, there are important adjustments to make for large batches:

1. Dilution

When you shake or stir a cocktail with ice, the ice melts and adds approximately 25–30% water to the drink. This dilution is built into the classic single-serve experience. In a batched cocktail, you are not shaking each drink individually, so you must add water manually to replicate this dilution.

The standard recommendation is to add 25% of the total spirit volume as water to a batch that will be served over ice, or stir with ice just before service.

2. Citrus Juice

Fresh citrus juice oxidizes and becomes bitter within a few hours. For cocktails with citrus:

• Make batches no more than 4 hours before serving
• Store refrigerated and covered
• Do not add carbonated mixers until just before serving

3. Carbonation

Never batch carbonated mixers (soda water, tonic, sparkling wine) in advance — they lose carbonation quickly. Add these per serving at the time of service.

4. Garnishes and Ice

Calculate garnishes per individual serving. Provide a large block of ice or plenty of cubed ice for service. A large block melts slower than many small cubes, keeping the batch cold without over-diluting.

Serving Size Reference

A standard cocktail is typically 4–6 oz (120–180 ml) total poured volume. A punch cup serving may be 6–8 oz (180–240 ml). Beer and wine servings are larger, but spirits-based cocktails are usually in the smaller range.