Boba looks like a high-margin business until you count toppings, cups, and waste.
Milk tea margins drop fast when scoop sizes drift, pearls expire, and delivery packaging stacks up. This guide shows the practical cost math and portion controls that keep a boba menu profitable in the U.S.
Quick Summary
- Cost every drink by ounces, not recipes.
- Toppings are your margin leak if add-on prices are flat.
- Packaging is a real line item for boba (sealing film, wide straws, delivery bags).
- Set one target cost % for core drinks, then price toppings separately.
The 5 Costs That Actually Move Your Margin
- Milk base (whole milk, non-dairy, or creamer)
- Toppings (pearls, pudding, jelly, popping boba)
- Cup + seal + straw (boba packaging is heavier than coffee)
- Labor waste (overbrewed tea, expired pearls, remakes)
- Delivery fees + extra packaging
If you only track tea + milk, your food cost will look fine on paper and fail in real life.
Core Costing Formula (Use This for Every Drink)
Unit cost = Ingredient price / Usable amount
Drink cost = Sum of (unit cost x portion)
Food cost % = Drink cost / Menu price
Do the math per ounce so you can scale to 16 oz, 24 oz, or 32 oz without rebuilding recipes.
Example: 24 oz Classic Milk Tea (US)
Example numbers only. Replace with your invoices.
| Item | Portion | Cost |
|---|---|---|
| Black tea concentrate | 6 oz | $0.30 |
| Whole milk | 8 oz | $0.55 |
| Sugar syrup | 1 oz | $0.10 |
| Cooked tapioca pearls | 3 oz | $0.35 |
| Ice | 10 oz | $0.02 |
| Cup + seal + straw | 1 set | $0.38 |
| Total drink cost | $1.70 |
If your target food cost is 28%:
$1.70 / 0.28 = $6.07
Round to $6.49 or $6.75 depending on your market.
Topping Pricing Ladder (Don’t Flat-Price Everything)
A single flat add-on price kills margin because topping costs are wildly different.
Use tiers like this:
- Standard toppings (pearls, jelly): cost $0.20-$0.40 -> price $0.75-$1.00
- Premium toppings (popping boba, cheese foam): cost $0.45-$0.70 -> price $1.25-$1.75
- Double add-on: price 1.6-1.8x standard add-on
Toppings should usually be 3-4x cost.
Portion Control Playbook (Boba Version)
Small drifts change the whole P&L.
- Use color-coded scoops for pearls and jellies
- Mark milk fill lines on measuring cups
- Weigh the first 3 drinks of every shift and spot-check later
- Track remake rate per shift (remakes are hidden cost)
Batch & Waste Rules
Boba operations are batch-heavy, so waste is the silent killer.
- Brew tea in smaller batches during slow periods
- Cook pearls on a timer and record discard weight
- Use smaller topping pans to avoid end-of-day throwouts
If you are not tracking discard, your food cost report is optimistic.
Delivery Pricing Shortcut (US)
Delivery adds packaging, commission, and remake risk. Use a pricing formula that includes fees:
Delivery price = (Drink cost + Delivery packaging) / (1 - Target food cost % - Commission %)
Example:
- Drink cost: $1.70
- Delivery packaging: $0.20
- Target food cost: 28%
- Commission: 20%
$1.90 / (1 - 0.28 - 0.20) = $3.65
If your in-store price is $6.49, a delivery price of $7.49-$7.99 is reasonable.
Size Pricing Matrix (16 oz vs 24 oz vs 32 oz)
Do not price by gut feel. Price by ounces.
- Calculate cost per ounce for tea base and milk base.
- Multiply by total ounces for each size.
- Add fixed packaging + topping cost.
- Apply your target food cost %.
This keeps all sizes aligned even when milk or cup prices move.
Common Mistakes
- Pricing toppings as a flat $0.50 regardless of cost
- Letting staff choose scoop sizes by feel
- Ignoring sealing film and straw costs in the recipe
- Not repricing delivery menus after commission changes
- Brewing tea in large batches that sit too long
Market Signals (US)
Use these as direction, not exact menu pricing inputs:
- USDA’s Food Price Outlook shows nonalcoholic beverages and sugar & sweets are still inflation-sensitive.
- BLS average price data for whole milk and sugar helps you spot trend changes early.
If milk or sugar moves, boba margins move.
Weekly Checklist
- Update prices for your top 3 milks and top 3 toppings
- Check actual vs target food cost % on your top 10 drinks
- Review remake rate and customer complaints
- Audit cup and straw inventory (shrink is real)
- Re-run delivery pricing after any commission change
Related Guides
- Cafe Menu Cost Guide
- Juice Bar Cost Guide
- US Menu Pricing Calculator
- US Menu Price Rounding Guide
- US Delivery App Pricing Guide
- Recipe Costing Guide
- Food Cost Ratio Guide
- Prime Cost Guide
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