The day is not uniform. Half the takings arrive in ninety minutes, and staffing built on a daily average leaves a queue at eight-thirty and three people standing around at three.
Waste is a number, not a feeling. What was prepared and what went in the bin, by product and by day, is what turns the pastry order from a habit into a decision.
Stock moves at different speeds. Milk is daily, beans are weekly and pastries are made or delivered to a forecast — treating them with one reorder rule guarantees running out of one and throwing away another.
A loyalty scheme is only useful if it tells you something. Who comes back, how often and what they buy is what justifies the discount; a stamped card tells you nothing at all.