Series: From Financial Statements to Operating Decisions
A restaurant’s income statement may present cost of goods sold as a single line.
Food cost.
Beverage cost.
Retail merchandise.
Packaging and supplies.
Each appears as a dollar amount and, commonly, as a percentage of revenue. When that percentage rises, the typical response is equally simple:
“We need to get food cost down.”
But a cost-of-goods-sold percentage does not tell a restaurant what to do.
It tells the restaurant what happened.
The number is the accumulated result of decisions made throughout the business: what was purchased, what was delivered, what was accepted, how products were stored, what was prepared, how portions were controlled, what guests ordered, what was wasted, what was discounted, and whether any of it was recorded accurately.
Cost of goods sold is not merely an expense category.
It is the financial expression of an operating system.
The Financial Statement Shows the Outcome
At its most basic, actual cost of goods sold is calculated as:
Beginning Inventory + Purchases − Ending Inventory = Actual Cost of Goods Sold
That formula is necessary, but it is not sufficient for operating a restaurant.
It tells us the cost assigned to the products used during a period. It does not tell us why the cost was higher or lower than expected.
A restaurant can report a 31% food-cost percentage for many different reasons:
- Ingredient prices increased.
- Menu prices failed to keep pace with ingredient costs.
- Guests purchased more low-margin items.
- Portions were larger than the recipes specified.
- Product was spoiled or wasted.
- Deliveries were received incorrectly.
- Vendor invoices contained errors.
- Transfers between locations were not recorded.
- Employees did not ring in every item.
- Discounts or complimentary items were miscoded.
- The beginning or ending inventory count was inaccurate.
The same financial outcome can therefore describe several very different operating realities.
That is why a percentage by itself cannot diagnose the business.
The income statement identifies the result. The operating system explains how the result was produced.
Theoretical Cost Creates a Point of Comparison
To understand cost of goods sold operationally, leaders need more than actual cost. They also need a reasonable measure of what the products sold should have cost.
That is theoretical cost:
Items Sold × Standard Recipe Cost = Theoretical Cost of Goods Sold
If a restaurant sells 100 menu items and each item has an accurate recipe cost, the restaurant can estimate what those sales should have consumed in ingredients.
Actual cost measures what the business appears to have used.
Theoretical cost measures what the business should have used based on recorded sales and established standards.
The difference between the two is often called the actual-to-theoretical variance.
Actual COGS − Theoretical COGS = Cost Variance
That variance is not automatically waste, theft, or poor management. It is a signal that the operating system deserves closer examination.
A variance may come from outdated recipe costs, missing invoices, inaccurate inventory counts, unrecorded transfers, production waste, portion inconsistency, or products leaving the restaurant without being correctly entered into the point-of-sale system.
The variance does not provide the answer.
It gives leaders a better question.
Purchasing Is Part of the System
Restaurant cost begins before a product enters the building.
Purchasing decisions determine:
- Which vendors the restaurant uses
- Which products it buys
- What specifications those products must meet
- How frequently orders are placed
- Whether purchases are based on forecasts or habit
- Whether volume discounts create real savings
- Whether minimum-order requirements result in excess inventory
- Whether substitutions are approved and recorded
- Whether invoice prices agree with contracted or expected prices
A lower purchase price does not always produce a lower operating cost.
A less expensive product may have a lower usable yield. It may require more preparation time. It may produce inconsistent portions or a weaker guest experience. It may spoil faster or require the restaurant to hold more inventory than it needs.
Good purchasing is not simply buying the cheapest available product.
It is selecting the right product, at the right quality, in the right quantity, from a dependable source, at an economically sound price.
This is stewardship rather than austerity.
The objective is not to spend as little as possible. It is to use the restaurant’s resources wisely in support of the experience it has promised to guests.
Receiving Protects the Purchase
A restaurant can negotiate excellent vendor terms and still lose the benefit at the back door.
Receiving is where the restaurant confirms that it received what it ordered and is being charged what it agreed to pay.
A sound receiving process asks:
- Was the correct product delivered?
- Was the correct quantity delivered?
- Does the quality meet the restaurant’s specifications?
- Is the product at an acceptable temperature?
- Does the invoice price match the expected price?
- Were substitutions authorized?
- Were shortages, damaged goods, or rejected products documented?
- Were credits requested and later confirmed?
- Was the invoice entered accurately and assigned to the correct location and category?
These procedures may appear administrative, but they are part of margin management.
Every undocumented shortage, missed credit, pricing error, or incorrect delivery eventually appears in the financial statements. By the time it reaches the income statement, however, the original transaction may be weeks in the past.
Financial reporting is most useful when it connects back to the process that produced the number.
Inventory Is More Than a Monthly Count
Inventory is often treated as a month-end accounting requirement.
Teams count bottles, boxes, proteins, produce, dry goods, and packaging because accounting needs an ending inventory balance.
But inventory is also an operating decision.
The restaurant must decide:
- How much product to keep on hand
- Where products should be stored
- Who can access them
- How products are labeled and rotated
- How frequently high-value items should be counted
- How transfers are documented
- How spoilage and breakage are recorded
- How prepared products are measured
- Whether inventory quantities are consistent with expected demand
Too little inventory can lead to stockouts, emergency purchases, limited menu availability, and disappointed guests.
Too much inventory ties up cash, occupies storage space, hides purchasing problems, and increases the risk of spoilage or obsolescence.
The goal is not the lowest possible inventory balance. It is an inventory level that supports reliable operations without unnecessarily consuming cash or increasing risk.
Accuracy matters as well.
A poor inventory count can make a healthy operation appear inefficient or temporarily conceal a real problem. Inconsistent counting methods, changing units of measure, incorrect pack sizes, and outdated item costs can distort the result before management begins analyzing it.
A precise percentage built on unreliable inputs is still unreliable.
Recipes Translate Intention Into Cost
A menu price reflects what the restaurant charges.
A recipe determines what the restaurant intends to provide in exchange.
Without documented recipes and portions, theoretical cost becomes difficult to measure and execution becomes dependent on individual judgment. One cook’s serving may differ from another’s. One location may prepare the item differently from another. Ingredient substitutions may occur without financial or culinary review.
A useful recipe system includes:
- Current ingredients
- Standard quantities
- Preparation instructions
- Expected yield
- Portion size
- Plate or packaging specifications
- Current ingredient costs
- Allowances for trim, cooking loss, or production yield
- A process for approving changes
Recipes are sometimes described as a form of control, but they also protect employees.
Clear standards reduce ambiguity. They help teams understand what successful execution looks like. They support training, consistency, planning, and fairness.
The purpose is not to remove judgment from the kitchen. It is to distinguish intentional creativity from accidental inconsistency.
Yield Matters as Much as Purchase Price
The invoice cost of an ingredient is not always its usable cost.
A product may lose weight through trimming, cooking, draining, deboning, or preparation. If a restaurant purchases ten pounds of product but can serve only eight pounds, the cost per usable pound is higher than the purchase price suggests.
A yield test helps determine:
- The amount purchased
- The amount available after preparation
- The usable yield percentage
- The actual cost per usable unit
- The number of portions the product should produce
This becomes especially important for proteins, seafood, produce, house-prepared items, batched beverages, and products with significant preparation loss.
Without yield information, a recipe can appear profitable while understating its actual cost.
Again, the financial statement cannot reveal this by itself. The answer lives in the operating process.
Waste Is Information
Waste should be reduced, but it should also be understood.
A waste log is not merely a record of mistakes. It is a source of operating intelligence.
Waste may result from:
- Overproduction
- Inaccurate demand forecasts
- Improper storage
- Expired products
- Preparation errors
- Incorrect orders
- Guest returns
- Portioning mistakes
- Equipment failures
- Training gaps
- Product-quality problems
- Menu items with limited cross-utilization
Leaders who respond to waste primarily through blame often cause employees to hide it. The financial cost still exists, but the business loses the information needed to correct the underlying issue.
A healthier response treats waste honestly.
What happened?
Why did it happen?
Is this an isolated occurrence or a pattern?
What condition allowed it?
What should change in ordering, training, preparation, storage, equipment, or menu design?
Accountability remains necessary. But accountability is most effective when it produces learning and repair rather than fear and concealment.
Product Mix Changes the Percentage
Cost of goods sold is also affected by what guests choose to buy.
Consider two entrées:
- Entrée A sells for $20 and costs $5 to produce.
- Entrée B sells for $30 and costs $12 to produce.
Entrée A has a 25% food-cost percentage and generates $15 of gross profit.
Entrée B has a 40% food-cost percentage and generates $18 of gross profit.
If guests increasingly purchase Entrée B, the restaurant’s food-cost percentage may rise even though gross profit dollars per item also rise.
That does not necessarily mean the restaurant is performing worse.
Percentages must be interpreted alongside contribution margin, guest demand, kitchen capacity, menu positioning, and the role each item plays in the overall experience.
A restaurant should not eliminate every high-cost-percentage item or promote every low-cost-percentage item. It should understand how pricing, popularity, and contribution interact.
The goal is not to produce the lowest theoretical food-cost percentage.
The goal is to create a menu that guests value and that produces enough gross profit to support the restaurant’s people, occupancy, operating expenses, reinvestment, and long-term health.
Discounts and Comps Must Be Visible
Products sometimes leave a restaurant without producing their expected revenue.
There may be legitimate reasons:
- Guest recovery
- Employee meals
- Manager meals
- Promotions
- Community donations
- Influencer or media events
- Loyalty rewards
- Training
- Sampling
- Complimentary celebrations
These uses are not inherently wrong. Some may be essential to hospitality or aligned with the restaurant’s values.
But they must be visible.
When products are consumed without being properly recorded, theoretical cost becomes understated and the actual-to-theoretical variance grows. Management may then interpret the variance as kitchen waste or poor portion control when the real issue is incomplete transaction data.
A business cannot wisely evaluate what it refuses to name.
Properly recording discounts, comps, employee meals, and promotional uses allows leadership to determine whether these decisions are purposeful, affordable, and producing the intended result.
Menu Pricing Is Only One Lever
When product costs rise, increasing menu prices may be appropriate. But pricing is only one part of the system.
Other responses may include:
- Renegotiating vendor terms
- Adjusting purchasing specifications
- Improving recipe yields
- Reducing unnecessary inventory
- Revising portions thoughtfully
- Changing preparation methods
- Improving product cross-utilization
- Redesigning low-performing menu items
- Addressing receiving errors
- Reducing overproduction
- Correcting point-of-sale configuration
- Improving training
- Reconsidering discount practices
- Promoting items with stronger contribution margins
Leaders should be cautious about automatically passing every cost increase to guests or automatically requiring teams to absorb it.
The right response depends on the restaurant’s concept, value proposition, guest expectations, competitive position, operational capacity, and financial needs.
Discernment requires more than a percentage target.
Better Metrics Reveal the System
Food-cost percentage and beverage-cost percentage remain useful outcome metrics. They help leaders monitor performance and identify areas that deserve attention.
But they become more useful when supported by driver metrics.
Depending on the operation, those metrics may include:
- Actual-to-theoretical cost variance
- Purchase price variance
- Waste by category and cause
- Inventory days on hand
- Inventory turnover
- Recipe-cost changes
- Portion yield
- Vendor price changes
- Credit recovery
- Emergency purchases
- Transfer accuracy
- Discount and comp usage
- Product contribution margin
- Menu-item popularity
- Stockout frequency
- Count adjustments
- Spoilage and breakage
- Cost by sales channel
- Packaging cost per order
The purpose is not to create a dashboard filled with every measurable activity.
The purpose is to identify the few measures that help a specific restaurant understand where its system is functioning well and where it is breaking down.
Metrics should improve awareness and decision-making.
They should not become another means of pressuring people around a result they cannot directly control.
The Percentage Belongs to the Whole Business
Cost of goods sold is sometimes treated as the kitchen’s responsibility.
But the outcome is shaped by many stakeholders:
- Owners determine the concept, pricing philosophy, and investment priorities.
- Finance determines how purchases, inventories, credits, and transfers are recorded.
- Purchasing determines vendors, specifications, and order quantities.
- Receiving teams verify deliveries and invoices.
- Culinary leaders establish recipes, yields, and preparation standards.
- Employees execute those standards.
- Marketing influences promotions and product mix.
- Managers authorize discounts and comps.
- Technology systems capture sales and inventory activity.
- Guests ultimately determine what they purchase.
No single employee creates the percentage.
The result emerges from the system these people share.
That does not eliminate individual responsibility. It places individual responsibility within the larger operating reality.
When leaders tell one department to “fix food cost” without examining the rest of the system, they may be asking people to solve a problem they did not create and cannot fully control.
Financial Outcomes Are Evidence
At Lord CPAs, we believe financial outcomes do not drive a business. They provide evidence of how the business is interacting with people, products, systems, and decisions.
Cost of goods sold is a clear example.
The percentage is evidence of:
- How thoughtfully the restaurant purchases
- How carefully it receives
- How accurately it counts
- How consistently it prepares
- How honestly it records
- How intentionally it prices
- How responsibly it uses resources
- How effectively its systems support its people
A rising cost percentage should not begin with accusation.
It should begin with curiosity.
What changed?
Where did it change?
Which part of the system produced the change?
What do the people closest to the work already know?
What action would address the cause rather than merely improve the appearance of the number?
The financial statement is the beginning of that inquiry, not the end.
Build a Healthier System, Not Just a Better Percentage
A restaurant cannot directly manage a cost-of-goods-sold percentage.
It can manage the decisions and conditions that produce it.
It can improve purchasing.
It can strengthen receiving.
It can maintain accurate recipes.
It can understand yield.
It can count inventory consistently.
It can record waste honestly.
It can make discounts visible.
It can evaluate product mix.
It can train people clearly.
It can create systems that make responsible action easier.
When these practices improve, the financial outcome often improves with them.
But the deeper benefit is a business that operates with greater clarity, consistency, accountability, and care.
Cost of goods sold is not just a line on the income statement.
It is the story of how a restaurant transforms its resources into an experience for its guests.
The question is not simply whether the percentage is good or bad.
The better question is whether the operating system behind it is healthy.
Lord CPAs helps restaurant and hospitality leaders connect financial results to the operating decisions that produce them. By moving beyond percentages and examining the systems underneath them, leaders can make clearer decisions, protect their resources, and build healthier businesses.
