Turn a headcount into a shopping plan.
Confirm cups, convert net ingredients into packs, then work backward from the first pour. Examples below are arithmetic illustrations, not tested recipes.
Cup capacity is not finished drink volume
For 12 guests at one cup each with a 10% buffer: 12 × 1 × 1.1 = 13.2, rounded up to 14 cups. The buffer is already included; do not add another 10% to every ingredient.
Fourteen 500 mL cups have a combined capacity of 7 L. The black-tea starting formula uses 225 mL tea, 150 mL milk and 25 mL syrup per cup, plus about 100 mL space for ice. That means 5.6 L planned liquid and 1.4 L reserved ice space—not 7 L finished liquid and not 1.4 kg ice.
In a mixed menu, manually set final quantities for each drink. The planner adds those quantities and does not apply another buffer. Different drink formulas produce different liquid totals.
Convert net ingredients into packs
Packs to buy = (net need − usable stock) ÷ usable amount per pack, rounded up. If stock already covers the need, buy none.
Fourteen classic black milk teas require 2.1 L milk in the starting formula. With no stock and 1 L cartons, that means three cartons. Distinguish the purchased amount from the consumed amount.
Filtered tea is not starting water. Use the tea product directions and a trial yield to determine dry leaves and water. For pearls, distinguish purchased dry weight from drained cooked serving weight. Weigh a trial ice portion rather than converting reserved cup space directly into grams.
Ingredient specifications and equipment →Separate spending from consumption cost
Purchase spending = whole packs bought × pack price. Ingredient consumption cost = amount actually used ÷ pack amount × pack price. Add used cups and other consumables separately.
Divide consumed ingredients and consumables by actual cups served for a per-cup consumption estimate. Record spills, trial cups and leftovers. Use your own purchase prices; this site does not claim current market prices.
Work backward from the first pour
| Stage | Task | Ready when |
|---|---|---|
| Day before | Guests, restrictions, stock, shopping | Menu and quantities confirmed |
| Before production | Trial cup, labels, clean vessels | Fill and batch size known |
| Production | Brew, filter, prepare toppings | Usable amounts recorded |
| Before arrival | Set up and assign refilling | Guest route is clear |
| During party | Track pours and refill as needed | Remaining cups can be estimated |
| Afterward | Handle leftovers by product directions | Consumption record complete |
If a trial confirms a task takes 15 minutes and the next task must start at 14:30, its latest start is 14:15. This only illustrates scheduling; it is not a milk tea brewing time. Shared-equipment tasks must be sequential.
Common questions
Can I add pearls without changing the liquid?
Trial the cup again. Toppings occupy space and cannot simply be added to a full cup. The planner lists optional topping weight but does not automatically remove liquid or ice.
Can I mix everything ahead?
This depends on the actual products, recipe, containers, serving time and holding conditions. Follow product instructions; there is no universal make-ahead interval supplied here.
Are the starting formulas tested?
No measured trial records are published for them yet. They show planning quantities. Trial the exact products and record the final mix before preparing a batch.