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Restaurant Combo Items Depleting Wrong Stock: Map Every Sub-Item
Why a Combo Can Sell and Still Show Zero Cost
A combo depletes the wrong stock when its sub-items are rung on zero-price keys and never linked to recipes. The parent combo button carries the whole sale price, so the burger, fries and drink inside it post no cost and move no stock. On the report the combo looks like pure profit, while the shelf quietly empties.
The split sits between the parent item and its sub-items. An operator sells a $12 combo built from a burger, fries and a drink that together cost $4.40 of stock.
- What it really costs. That is a true food cost of 37%.
- What the report shows. When the sub-items ring at zero, the combo posts 0% instead, and the $4.40 of ingredients it consumed never leaves inventory on paper.
Both numbers break at once. Revenue can inflate on the parent while cost reads zero, so the dish that moves the most stock is the one you can see the least.
The fix is not a report setting. It is mapping each sub-item the combo consumes to its recipe, so every sale deducts the right ingredients at the right cost.
Work Out Which Way Your Combos Break
Three symptoms point at three different faults. Read the one you have, then go to its branch below.
| What you see | What it means | Where to fix it |
|---|---|---|
| Combo shows zero cost or pure profit | Sub-items ring at zero and map to no recipe | Map each sub-item to its recipe |
| Variance on items you did not sell | Combo links to the wrong recipe or modifier | Correct the recipe mapping |
| Combo missing from the sales report | Parent item never reaches the POS sales feed | Check the POS export and its mapping |
When the Combo Depletes Nothing
The combo rings up, the ticket prints, and no ingredients move. The cause is a missing link: the sub-items are not mapped to recipes, or the combo parent never reaches the POS sales-by-product feed that drives depletion. Nothing deducts because nothing told the system what the sale consumed.
Map the POS item code for each sub-item and modifier to the recipe it uses. Once an item is mapped, every sale of it deducts the correct ingredient quantities across inventory.
- Review screen. Items that are still unmapped surface in a dedicated review screen after each sync, so you clear a few each time until none are left.
- POS connections. Supy connects to 75+ POS, accounting and supplier systems, and its recipes and prep recipes link to the POS menu items, modifiers included, so sales deplete the right stock.
Work through standardising POS item and ingredient mapping once per site, and the review screen stops filling up.
When the Combo Depletes the Wrong Items
Here the stock moves, but on the wrong items, so your next count comes up short on something you never sold. The combo is mapped, but to one generic recipe rather than the sub-items it actually consumes, or a modifier points at the wrong ingredient. You find the shortage on whichever items the system guessed at.
Map the combo to the recipes its sub-items really use.
- Each outlet. Redo the modifier-to-recipe mapping for each outlet, because a combo mapped correctly at one site can still be wrong at another.
- Each sales type. Set the mapping per sales type as well. Supy tracks a separate cost for dine-in, takeaway and delivery, so a combo sold through three channels deducts and costs correctly in each.
When a sales-type mapping changes, the affected sales reprocess, so the cost data stays right without a rebuild.
Keep Revenue on Items That Should Not Deplete Stock
Some package lines should book revenue and deplete nothing, such as a service charge, a cover, or a package upsell that moves no ingredients. Mapping these to a normal recipe would deduct stock you never used, which is the mirror image of the first fault.
Point these lines at a revenue-tracking, non-stockable recipe. The sale posts its revenue so the report still shows the combo's full takings, and stock stays put because there is no ingredient to deduct. Revenue stays visible, inventory stays honest, and the profit on the package reflects only the items that actually left the shelf.
Name the branch you are in and make one move.
- Zero cost. Zero cost means unmapped sub-items, so map them.
- Wrong-item variance. Variance on the wrong items means a wrong recipe link, so correct it.
- Missing combo. A missing combo means a broken sales feed, so check the export.
Start with your highest-volume combo.
- Map. Map its sub-items and modifiers.
- Test. Ring one test sale.
- Confirm. Confirm the stock moved by the amount the recipe says.
One combo proven right is the template for the rest of the menu.
