If your food cost is 32% of revenue and your waste is 8%, your real food cost on what guests eat is closer to 35%. That 3% is your dinner cook's salary. It walks out the back door every night in the form of overprepped curry that nobody ordered.
The real cost of waste
Data you already have
Forecasting feels exotic but it is just averages with weather. You need three data sources, all of which are already in your POS: items sold per day for the last 90 days, day of week, and a weather flag (rain or no rain). That is enough to forecast 80% of your prep needs to within 10%.
The simple forecast
- 1For each menu item, compute the average daily quantity sold by day of week.
- 2Multiply by a rain factor (typically 0.7 on a rainy weekday, 0.9 on a rainy Saturday).
- 3Add a 10% buffer for safety. Print this as tomorrow's prep list.
- 4At end of day, log actual sold vs prepped. After 4 weeks, your buffer can shrink to 5%.
Your top 10 items by volume are 70% of your prep waste. Forecast those first. Forget the long tail until you have the top 10 dialed in.
Prep list discipline
A forecast is useless if the prep list is ignored. Print it on paper, post it next to the prep station, and have the morning cook initial each line as it is completed. At end of day, the closing cook records what was wasted on the same sheet.
After 30 days, you will have the most valuable spreadsheet in your restaurant: actual sold, prepped, and wasted, item by item, day by day. Use it to renegotiate vendor quantities, reformulate dishes that consistently overspoil, and spot the days where the forecast is reliably wrong.
Realistic results
23% waste reduction is the median we see across 60 days of disciplined prep-list use. The top venues hit 40%. The bottom venues hit 5% — usually because the chef refuses to follow the list. The discipline is the product.
Builds the KOT routing engine. Believes a kitchen is a real-time system, not a queue.
