Quick answer
Give legitimate non-sale use a clear recording route: staff drinks, training, samples, complimentary items and remakes should not disappear into one unexplained stock gap. Keep the log quick and explain its purpose. Recording an item does not mean the person who made it did something wrong.
Separate the policy from the measurement
Before counting staff drinks, make sure the team knows what is permitted. A stock record cannot fix an unwritten or inconsistently applied rule. Agree the relevant staff policy through your normal management process, then record the use that policy allows.
The linked café-owner discussion describes uncertainty around staff drinks and disposable cups. It is a useful example of why assumptions cause friction. This article deals with the stock record, not what allowance every café should offer or whether a particular worker has broken a rule.
Use reasons that explain the next action
Create a small list of categories with a plain definition. A customer changing an order after preparation is different from a drink made to the wrong recipe. Training is a planned cost. A quality-check espresso is also different from an accidental spill.
Record the product and quantity as well as the reason. If a large oat latte is logged only as one staff drink, you cannot reconcile its milk or packaging use. Your till may already support appropriate non-sale buttons or reason codes; check its behaviour with your bookkeeper before changing reporting or tax treatment.
- Staff use: an item taken under the agreed policy.
- Training or quality check: planned preparation for learning or calibration.
- Remake: replacement of an already prepared item, with a short factual reason.
- Sample or complimentary item: an authorised customer item without a normal sale.
- Spill or damage: product physically lost before it can be served.
Keep the record short during service
Place the recording point where the product is made. For a paper trial, use tick boxes beside common items and a small space for unusual cases. Do not require a worker to type a long explanation while a queue builds. Where a reason needs investigation, a manager can follow up later.
Use an original reconciliation example: the till shows 200 customer milk drinks, while the non-sale log shows eight staff drinks, four training drinks and three remakes. Recipe-based milk usage needs to account for all 215 preparations if they used the same recipe, not just the 200 sales.
Remakes can involve partial preparations, so avoid automatically assigning a full recipe to every entry. A drink stopped before milk was added used different stock from a finished drink returned by a customer. Define whether your first trial uses full-item estimates or records major ingredients, and keep that limitation visible.
Review the cause, not just the person
Look for patterns that suggest a practical fix: cup sizes that are easy to confuse, unclear order modifications, a recipe that new starters cannot find or a machine setting that changes unexpectedly. A well-recorded increase in remakes may reflect more honest reporting rather than worse performance.
BCcampus's inventory guidance provides background on relating physical stock to records. The log here fills one common gap in that record; it does not prove that every remaining difference is avoidable. Counting errors, receipt timing and recipe assumptions still need checking.
Further reading: BCcampus: Basic Inventory Procedures
Show the team what changed
At the end of the week, share one useful finding and the action taken. For example, colour labels on two otherwise identical syrup bottles might address repeated wrong-flavour remakes. Explain how you will check whether the change helped without setting an unrealistic zero-error target.
Keep personal information out of any public-facing report. If names are needed for follow-up, restrict access appropriately and explain that use to staff. A transparent routine makes it easier to record mistakes promptly. A punitive one encourages the very gaps you are trying to understand.
Use house knowledge for the recording instructions and recurring tasks for review. Continue recording sales and financial adjustments in the till or accounting system that owns those figures. Keep agreed procedures in Unpickle.