The difference between hosting a cocktail party and bartending one is about ninety minutes of shaking. Batching gives those minutes back: make the night's drink once, in quantity, before anyone arrives, and spend the evening pouring instead of performing.

Done wrong, a batch tastes flat and watery. Done right, nobody can tell it wasn't made to order. The difference is three rules and a little math.

The math: scale everything except your judgment

Batching is multiplication. A margarita at 2 oz tequila, 1 oz lime, 0.75 oz orange liqueur becomes, for ten drinks, 20 oz tequila, 10 oz lime, 7.5 oz orange liqueur. Two guardrails:

• Work in ounces, then convert. 25 oz is one 750ml bottle, close enough. A ten-drink margarita batch is most of a bottle of tequila, which is also a useful shopping insight.
• Scale strong flavors at 75 to 80 percent. Intense ingredients (amari, absinthe rinses, spice syrups) compound in volume. Start shy; you can stir more in, you can't take it out.

Batch the night's menu in the app first and the shopping handles itself: MixKings builds the list from every ingredient on the menu, and what you buy moves into your inventory when you're done.

The rule most people miss: dilution is an ingredient

When you shake or stir a single drink, ice melts into it, roughly 20 to 25 percent water by volume. That water is not a flaw, it's part of the recipe. A batch never meets a shaker, so you add the water yourself: for every 4 cups of batched cocktail, stir in about 1 cup of cold water, then chill the whole container in the fridge (not on ice, which dilutes unevenly).

Skip this step and your batch tastes harsh at first pour and turns watery as the pitcher's ice melts. Add it and every pour lands like it was just made.

What batches beautifully

• Spirit-forward stirred drinks: negronis, manhattans, old fashioneds. All-shelf-stable ingredients, so you can batch these days ahead. This is the bottled-cocktail move: funnel into a bottle, park it in the fridge, pour over ice on demand.
• Citrus crowd-pleasers, batched same-day: margaritas, palomas, daiquiris. Citrus fades, so squeeze and batch within a few hours of the party.
• Punches and spritzes: built for volume by centuries of hosts. Add anything sparkling at serving time, never in the batch.

What falls apart in a pitcher

Anything with egg white or cream (they need the shake, and they don't hold), anything already carbonated (flat within the hour; top each glass instead), and delicate herb drinks like mojitos, where muddled mint turns swampy by hour two. Garnish is also a per-glass job: batch the liquid, finish each pour with the twist or the salt rim.

Serving it like a host

Pour over fresh ice per glass, keep the batch container in the fridge between rounds, and put the drink on the menu by name. A batched drink with a name on the TV board reads as tonight's signature; a pitcher on the counter reads as leftovers. Same liquid, different evening. If the night turns competitive anyway (it happens), the competition guide is ready.

FAQ

How far in advance can you batch cocktails?
All-spirit batches (negronis, manhattans) keep for weeks refrigerated. Anything with fresh citrus should be batched the same day, within a few hours of serving.

How much water do you add to a cocktail batch?
About 20 to 25 percent of the batch's volume, roughly 1 cup of water per 4 cups of cocktail, to replace the dilution a shaker would have added. Then chill the container itself.

How many drinks are in one 750ml bottle?
A 750ml bottle holds about 25 ounces, which is twelve 2-ounce pours. A ten-drink batch of most cocktails uses most of one bottle of the base spirit.

MixKings builds the shopping list from your menu, tracks the bottles, and puts tonight's batch up on the TV by name.