COST CONTROL
Why Your Kitchen Is Profitable on Paper and Bleeding in Reality
Food cost percentage is the number every chef knows. Contribution margin is the number that actually determines whether the kitchen makes money.
THE NUMBER EVERYONE KNOWS — AND MISREADS
Food cost percentage measures one thing: for every rupee of food revenue, how many paise were spent on ingredients. It is an efficiency ratio. It does not tell you how much money the kitchen made. A 30% food cost on a ₹200 dish and a 30% food cost on a ₹2,000 dish are not the same business result. The first generates ₹140 in gross ingredient margin. The second generates ₹1,400. The percentage is identical. The contribution to the business is ten times different.
This is not a subtle distinction. It determines which dishes a chef should be promoting, which should be redesigned, and which should be removed and none of those decisions are made correctly if the chef is looking only at the percentage column.
“A kitchen can hit its food cost target every month and still run at a loss. The percentage measures efficiency. The contribution margin measures money. You cannot pay wages with a percentage.”
THE SEVEN FORMULAS EVERY CHEF MUST RUN FROM MEMORY
These are not accounting formulas. They are kitchen management tools. A chef who cannot run them without opening a spreadsheet does not yet own the kitchen’s numbers.
FOOD COST PERCENTAGE
Food Cost % = (Food Cost ÷ Food Sales) × 100 Example: ₹40,000 cost ÷ ₹1,20,000 sales × 100 = 33.3% |
The starting diagnostic. Use it to monitor trends, not to make individual menu decisions.
PLATE COST
Plate Cost = Total Recipe Cost ÷ Number of Portions Example: ₹2,000 recipe cost ÷ 20 portions = ₹100 per plate |
Without a documented, yield-tested plate cost, the selling price is a guess. This is the number that must be on every recipe card not an approximation, not last year’s figure.
MENU SELLING PRICE
Selling Price = Plate Cost ÷ Target Food Cost % Example: ₹100 plate cost ÷ 0.30 = ₹333 minimum selling price |
This gives the minimum viable price at which the dish hits the target. Market positioning may justify charging more. It should never justify charging less without a deliberate management decision.
EP COST — EDIBLE PORTION COST
EP Cost = Purchase Cost per kg ÷ Yield % Example: ₹1,000/kg ÷ 0.80 yield = ₹1,250/kg actual cost This is the only number that belongs on a recipe card. |
The invoice price is what you paid the vendor. The EP cost is what the ingredient costs you on the plate, after trimming and processing. Every recipe costed on invoice price is wrong.
CONTRIBUTION MARGIN — THE MOST IMPORTANT FORMULA
Contribution Margin = Selling Price − Plate Cost Dish A: ₹800 price − ₹200 cost = ₹600 margin (FC% 25%) Dish B: ₹400 price − ₹120 cost = ₹280 margin (FC% 30%) Dish A has a 5% higher food cost percentage. Dish A generates ₹320 more gross profit per cover. Promote Dish A. The percentage is not the problem. |
PRIME COST
Prime Cost = Food Cost + Labour Cost Target: Below 60–65% of net food and beverage sales. |
The most honest single metric of a kitchen’s operational health. A department with a controlled food cost but bloated labour is not well-run. The prime cost exposes it.
THEORETICAL VS ACTUAL FOOD COST
Theoretical FC = Sum of (Portions Sold × Plate Cost) Variance = Actual Food Cost % − Theoretical Food Cost % Target: Variance below 1.5 percentage points. Alarm: Any variance above 2.5 points demands investigation. |
FIELD NOTE: A persistent positive variance — actual cost higher than theoretical — means product is leaving the kitchen that is not being sold. Waste, over-portioning, unauthorized consumption, and theft all show up here. The variance does not tell you which. Your investigation does. |
THE 20-GRAM PROBLEM
A line cook over-portions a protein by 20 grams per plate. Twenty grams does not look like much. On a 200-cover Saturday dinner service, that is 4,000 grams- 4 kilograms of protein served without charge. At an EP cost of ₹1,200 per kilogram, that is ₹4,800 given away in one service. At five services a week, that is ₹24,000 a week. Over 50 operational weeks, that is ₹12,00,000 in annual ingredient cost from a single overrun on a single station.
The solution is not complicated. Weigh. Scale every protein before it leaves the section. Post the portion weight on the recipe card at eye level. Include it in the line check briefing. Make it the standard, not the exception.
MENU ENGINEERING — EVIDENCE REPLACES INSTINCT
Every dish on the menu is classified against two variables: how often it sells relative to the menu average, and how much margin it generates relative to the menu average. Four categories result. Run the analysis monthly from your POS data.
Category | Demand | Contribution | Action Required |
Stars | High | High | Feature prominently. Train servers to recommend them. Do not alter. |
Plow Horses | High | Low | Cost re-engineering. Find savings the guest cannot see. |
Puzzles | Low | High | Reposition. Fix the menu before removing the dish. |
Dogs | Low | Low | Remove, replace, or redesign. Sentiment is not financial reasoning. |
The most important principle: do not remove a Puzzle dish before asking why it is not selling. In my experience, Puzzles fail for three reasons poor menu placement, a description that does not communicate value, or a price point that creates hesitation. Fix those before removing the dish. A high-margin item that can be repositioned is worth more than a new dish that has to be developed, costed, and trained.
THE WASTE LOG THAT ACTUALLY WORKS
Most kitchens have a waste log. Very few use it as a management tool. A log reviewed at the morning briefing, discussed openly, and used to identify recurring patterns is a genuine cost control instrument. A log filled in reluctantly and filed without review is theatre the appearance of control without any of its effects.
The log must capture five data points per entry: item and quantity, value at EP cost, waste category (preparation loss / spoilage / cooking loss / returns / staff consumption), root cause, and the section responsible. Not just ‘burnt’ — why was it burnt? The root cause is where the corrective action lives.
The solution is not complicated. Weigh. Scale every protein before it leaves the section. Post the portion weight on the recipe card at eye level. Include it in the line check briefing. Make it the standard, not the exception.
Over Time: Waste logs compound into patterns. Consistent preparation waste on the same protein over three weeks is a skill gap or a specification problem. Consistent cooking loss on the same dish is an equipment or training issue. The log points you to the cause.
WHAT TO DO THIS WEEK
If you manage a kitchen, here are three actions that can be implemented before next service no additional cost, no technology required.
- Pull three months of POS data and run a basic menu engineering analysis. Category every dish. You will find at least two that deserve immediate action.
- Re-cost your three highest food-cost dishes using EP cost, not invoice price. If yield tests have not been run recently, run them this week. The cost on the recipe card is probably wrong.
- Start the waste log tomorrow. Review it at the morning briefing every day for two weeks. That habit alone reduces preparation waste 15 to 25% in most kitchens not because the team suddenly cares more, but because the numbers are visible and being discussed.