Scale a sour-style cocktail to any number of servings using a 2:1:0.75 ratio.
Usage Tip
Taste and adjust the sweet-sour balance before serving a big batch.
How to Scale Cocktails
Scaling a cocktail is just multiplying each ingredient by the number of servings – the ratio stays the same. A Margarita that is 2 oz tequila, 1 oz lime and 1 oz triple sec becomes, for 8 drinks, 16 oz tequila, 8 oz lime and 8 oz triple sec. The calculator above does the multiplication, estimates the strength and tells you how many bottles to buy.
| Servings | Tequila (Margarita) |
|---|---|
| 4 | 8 oz |
| 8 | 16 oz |
| 12 | 24 oz |
Cocktail Ratio Guide
Most classics follow a simple ratio. Learn a few and you can build – and scale – dozens of drinks.
| Family | Ratio (spirit : sweet : sour) | Example |
|---|---|---|
| Sour | 2 : 0.75 : 0.75 | Whiskey sour, daiquiri |
| Margarita | 2 : 1 : 1 | Tequila : triple sec : lime |
| Spirit-forward (stirred) | 2 : 1 | Manhattan (whiskey : vermouth) |
| Martini | ~5 : 1 | Gin : dry vermouth |
| Old Fashioned | Spirit + a little sugar | 2 oz + 1 tsp + bitters |
Party Batch & Punch Guide
For a crowd, batch ahead. Multiply the recipe by your headcount, mix in a large container, and chill. The one twist: a stirred or shaken drink normally gains water from ice, so a batch needs that water added back – roughly 20–25% of the spirit volume – or it will taste harsh.
For punch, use a large block of ice – it melts slowly and dilutes gently over the event rather than all at once. Plan about 2–3 drinks per guest for the first couple of hours.
ABV Explained
ABV (alcohol by volume) is the percentage of the drink that is pure alcohol. Add up the alcohol contributed by each spirit, divide by the total finished volume including dilution, and you have the drink’s strength. A spirit-forward stirred cocktail often lands around 25–30% ABV after dilution; a tall, mixed drink is far lower.
A US “standard drink” contains about 0.6 oz (14 g) of pure alcohol – useful for pacing.
Dilution Guide
| Method | Typical dilution |
|---|---|
| Stirred (Martini, Manhattan) | ~20–25% |
| Shaken (sours, Margarita) | ~25–30% |
| Built on ice (Old Fashioned) | ~10–20%, grows as it sits |
| Batched (no per-drink ice) | Add ~20% water to mimic |
Bartender Measurement Guide
Most cocktail recipes are written in fluid ounces. A standard jigger is 1.5 oz on one side and 0.75 oz (or 1 oz) on the other. A “dash” of bitters is about 0.03 oz; a “barspoon” is about 0.16 oz (½ tsp).
Bartender Conversion Chart
| Measure | Volume |
|---|---|
| 1 oz | 30 ml |
| 1.5 oz (1 shot) | 45 ml |
| 2 oz | 60 ml |
| 1 jigger | 1.5 oz / 45 ml |
| 1 cup | 8 oz / 240 ml |
| 750 ml bottle | ~25.4 oz (~17 shots) |
Glassware Guide
| Glass | Use for |
|---|---|
| Coupe / martini | Drinks served “up” (no ice) – Martini, Daiquiri |
| Rocks / old-fashioned | Spirit-forward over ice – Old Fashioned, Negroni |
| Highball / Collins | Tall mixed drinks – Mojito, gin & tonic |
| Margarita | Margaritas, frozen drinks |
Garnish Planning
Frequently Asked Questions
How do I scale a cocktail for a party?
Multiply each ingredient by the number of servings, then add about 20% water to replace the dilution you would normally get from ice. The calculator above does both and lists bottles to buy.
How much alcohol is in a cocktail?
It depends on the recipe and dilution. The calculator estimates ABV by dividing the alcohol volume by the total finished volume – many spirit-forward drinks land around 25–30%.
How many drinks does a 750 ml bottle make?
About 25 oz, or roughly 12 cocktails using 2 oz of the main spirit each. The bottle estimator above works it out for your batch.
Why add water to a batched cocktail?
Because there is no ice diluting each drink as you stir or shake it. Adding ~20% water gives the same balanced result instead of a harsh, over-strong drink.
How many drinks per guest should I plan?
A common guide is 2–3 drinks per guest for the first two hours, then about one per hour. Always offer water and food, and plan safe rides home.
Printable Conversion Chart
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