High sales feel like success because cash is moving. In catering and multi-site production, they can also mask the real story: you are buying more, throwing more, and giving more away than your models assumed. None of that requires theft. It requires drift.
Drift starts when recipes exist on paper but not on the scale. When prep rounds up “to be safe.” When trim and rework never get booked to a job. When one location portions heavy because it feels generous. Each decision is small. The compound effect is not.
Another common leak is yield fantasy. Your costing assumes an 85 percent yield on protein; the line consistently delivers less because receiving, storage, and fabrication are not held to the same standard every day. The P&L still uses the fantasy number until someone forces reality into the same week the money moves.
Sales spikes make drift worse, not better. Volume rewards shortcuts: skip the count, skip the label, push the thaw. You meet the rush - and you bake waste into the next three days. When the top line is loud, leadership often delays the uncomfortable inventory conversation.
The fix is not a single app. It is a chain you can audit: what you bought, what you stored, what you transformed, what you sold, and what you threw away - with owners at each link. Until that chain matches the floor, food cost will stay a blame magnet instead of a control surface.
When the system is honest, high sales finally work for you. You see margin because waste has a name and a threshold. That is when “we’re busy” stops being an excuse and becomes proof the structure is holding.