Food cost arguments get personal fast. The truth is usually dull: the system that connects buying to selling has a hole, and volume pours through it. Until you map the chain, you will fight people instead of fixing the leak.
Purchasing without guardrails is a system problem. Same-day substitutions, emergency buys, and “just grab it from retail” destroy comparability. Your theoretical plate cost never included that path.
Storage and rotation are system problems dressed as discipline issues. If walk-ins are full of unlabeled product and fuzzy FIFO, yield loss is guaranteed. Training someone to “try harder” does not replace bins, labels, and a first-expire-first-out rule people can follow at 5 a.m.
Production accuracy matters as much as recipe cost. Overproduction to avoid stockouts is a rational response when demand signals are noisy. Fix the signal - forecast, par levels, communication with sales - and overproduction stops being the default safety blanket.
Mix and pricing belong in the same conversation. A menu engineered on paper but sold with heavy comps and discounts is a different business than the one you modeled. The system has to capture what actually leaves the pass.
When you treat food cost as a chain, accountability becomes clean. Each link has an owner and a metric that updates fast enough to matter. The kitchen stops carrying the whole story - and finance gets a lever they can trust.