Does batching lower the quality of a cocktail?

Not if the batch is built to the spec and the dilution is decided deliberately. A stirred drink batched with its water and held cold is more consistent than the same drink built by eleven bartenders on a busy night; a shaken citrus drink should be batched only up to the citrus and finished to order.

How much water goes into a batched stirred drink?

As a rule of thumb, stirring adds somewhere around a fifth to a quarter of the drink's volume in melt; a batch that goes in the freezer or the keg takes that water up front. The exact figure is a decision per drink, written on the prep sheet, and it is what the cost per serve and the ABV are calculated from.

Should I keg cocktails?

For a high-volume long drink at a pool or an event bar, a carbonated keg is often the best-margin serve on the list — one pour, one price, no build. It needs the batch costed per serve at the diluted, carbonated volume and a spec card that says so.

Batching cocktails for service and events

Jesse Williams · 18 September 2026

In one paragraph

A batch earns its place when it makes a drink faster or more consistent without changing what the guest tastes, and it is costed like any other recipe — every ingredient at its ex-tax cost, divided by the number of serves the batch actually yields. The decision that most operators skip is where the dilution goes — stirred into the batch for a freezer bottle or a keg, or added in the glass over ice at service — because it changes the serve size, the ABV on the card and the cost per pour. Kegged and carbonated serves, freezer Martinis and pre-batched stirred drinks all follow the same rule, and a scaled batch should be filed as a recipe of its own so the serve that pours from it stays costed when a product price moves.

Batching is how a serious list survives a Saturday, a wedding or a pool bar at two in the afternoon. It is also where costings quietly go wrong, because a batch is a recipe that most spreadsheets never see.

When a batch earns its place

Batch a drink when it makes the serve faster or more consistent without changing what the guest gets. Stirred drinks with no citrus, no egg and no fresh juice are the obvious candidates: an Old Fashioned, a Manhattan, a Negroni, a Martini. Long drinks at volume — a Paloma, a highball, a spritz — batch and carbonate well. Shaken drinks with fresh citrus batch up to the citrus and get finished to order, because juice oxidises and egg white does not keep.

Do not batch a drink because it is on the menu. Batch it because the batch is better.

Where the water goes

Every stirred or shaken drink is diluted; the ice does it. When you batch, you decide where that water comes from, and the decision changes the numbers:

In the batch. The water is added up front and the batch is held cold — a freezer Martini, a bottled Old Fashioned, a keg. The serve is poured and done. The batch’s volume, its serves and its ABV all include the water.
In the glass. The batch is neat; the water arrives from the ice at service. The serve is built or stirred briefly over ice. The batch is stronger and smaller; the serve size on the card accounts for the melt.

As a rule of thumb, stirring adds roughly a fifth to a quarter of a drink’s volume in dilution; shaking a little more. Write the decision on the prep sheet. The bartender needs to know whether to stir the pour or just pour it, and the costing needs to know how many serves the batch makes.

Costing a batch per serve

A batch is a recipe: rows of products and preps at their ex-tax costs, a total, a yield in millilitres, and a serve size. Cost per serve is the batch cost divided by the serves the batch actually yields — after the water, after the straining loss when a cordial goes through a cloth, after the head space in the keg you never pour.

If a batch draws on a prep — a demerara syrup, a brown-butter bourbon — the prep’s own yield loss is already inside its per-millilitre cost, and the batch inherits it. If a serve draws on a batch, the same again. Product → prep → batch → serve: the chain has to be costed in that order, or the price on the menu is a guess.

Scaling for an event

An event is a batch with a target: two hundred serves, or forty litres, or whatever fits a four-litre container. Scale the recipe to the target, cascade the preps it needs — if the batch wants three litres of cordial, the cordial’s own recipe scales too — allow for straining loss, check the vessel, and file the scaled batch as a recipe of its own. That last step is the one that keeps the event costed: when the tequila’s price moves next month, the scaled Paloma moves with it.

A standing “service batches” book per outlet — the freezer Martini, the bottled Old Fashioned, the keg — and a separate book for each event, published to the team and unpublished when the event is done, keeps the bench tidy and the costing honest.

Kegging and carbonating

A kegged, carbonated cocktail is the best-margin serve on many lists: one tap, one pour, no build, no variance from free-pouring. It is also the batch most often costed wrong, because the carbonation adds volume and the keg holds volume that never pours. Cost it at the diluted, carbonated yield, less the dead volume, per serve. Put the target carbonation and the serve size on the spec card so the pool bar pours the same drink the lobby bar would.

The batch on the card

Whatever the batch, the spec card for the serve should show it: 60 mL from the batch, the glass, the ice, the garnish, the ABV of the finished drink. The team should not need to know what is in the batch to pour it correctly — but the prep sheet, the label and the costing should all agree, because they come from the same record.