How to Cater for a Crowd

Catering for a group goes wrong in a predictable order. It's almost never the food quantities — a caterer knows those, and for a smaller party you can judge them. It's the arithmetic sitting in front of the food: how many people you're really feeding, how many bottles a number of drinks turns into, and what happens when a drink is batched instead of made one at a time.

1. Work out what you're actually feeding

Start with confirmed attendees, not invitations sent, and add a spare allowance on top.

Be more generous with food spares than feels comfortable. The asymmetry is real: catered portions are made and paid for whatever happens, while unopened bottles can usually be returned or kept. Running out of food is the thing guests remember; a slightly larger bill isn't.

The Event Catering Quantity Calculator does this split and reports counts rather than weights — portions to order, and how they divide between standard and separate menus. Grams per portion is your caterer's question. The counts are the number to take into that conversation, and having them in advance makes an odd assumption on a quote much easier to spot.

For a smaller, less formal event the Party Food & Drink Calculator covers the same ground at a domestic scale.

Ask about dietary requirements on the invitation, and ask about allergies separately from preferences. They're different kinds of requirement with different consequences, and a caterer needs to know about them specifically rather than folded into a headline number.

2. The bottle count is where it goes wrong

This is the part worth reading twice.

A 750 ml bottle gives you six glasses at a 125 ml pour, five at 150 ml, and 4.29 at 175 ml. Across 900 drinks that's the difference between 150 bottles and 210 — sixty bottles, decided by a detail nobody consciously chose.

Free-pouring runs generous almost everywhere. If the number matters to your budget, agree the pour size with whoever is serving rather than letting it emerge on the night.

The Event Catering Quantity Calculator converts drinks to bottles for you, but the useful habit is knowing which direction the error runs: a generous pour doesn't cost you a little more, it costs you a whole extra case.

3. If you're batching drinks, the ice is an ingredient

A cocktail stirred or shaken with ice isn't the recipe. It's the recipe plus the water that melted into it — typically a fifth to a third of what reaches the glass, and it's doing real work softening the alcohol and bringing the drink into balance.

Multiply the recipe by twelve and pour it into a bottle, and you've made something noticeably stronger and harsher than the drink you tested. Nothing was mismeasured. An ingredient was left out.

The Cocktail Batch Scaler adds that water back deliberately, and reports the finished strength — worth knowing before you serve a room, because a spirit-forward drink lands somewhere in the low twenties by volume, in a glass that looks like neither wine nor beer.

Two practical points it also handles: leave the citrus out of anything batched more than a few hours ahead, since fresh juice is the one ingredient that genuinely doesn't keep; and check the finished volume against the container it has to live in before you start pouring.

4. Settle the venue's rules before you buy anything

Three things that change all of the above and are far easier to discover now:

• Corkage — and whether you may supply your own alcohol at all
• Licensing hours, checked against the hours you actually plan to serve
• Fridge and glassware capacity — 180 bottles has to go somewhere, chilled

And count the non-alcoholic options inside the drinks total rather than as an afterthought. Drivers, non-drinkers and anyone pacing themselves are still drinking something, and it still has to be bought.