How to Calculate Recipe Cost per Serving in a Restaurant

How to calculate restaurant recipe cost per serving

Recipe cost per serving is the sum of the cost assigned to each ingredient quantity used in a batch, divided by the number of servings produced. For each ingredient, calculate the cost of the used quantity from its purchase quantity and purchase cost. Keep units compatible and account for yield when usable amount differs from amount purchased.

Formula and ingredient inputs

For one ingredient with no yield adjustment: ingredient cost used = pack cost × quantity used ÷ pack quantity.

Batch recipe cost = sum of ingredient costs used. Cost per serving = batch recipe cost ÷ servings produced.

If preparation trim, cooking loss or another yield difference is material, convert the as-purchased cost to an edible-portion cost using a documented yield percentage. The National Restaurant Association’s foodservice curriculum includes unit-cost, edible-portion-price and yield-percentage calculations. Its method demonstrates why purchase quantity and usable recipe quantity should not be treated as identical when yield loss applies.

Worked example

Assume a recipe uses 600 grams from a 1,000-gram ingredient pack that cost ₹240. Under a simple compatible-unit calculation, the used quantity costs ₹240 × 600 ÷ 1,000 = ₹144. If other ingredient rows total ₹456, the batch ingredient cost is ₹600. If the batch produces 12 servings, recipe cost is ₹600 ÷ 12 = ₹50 per serving.

The example assumes the full purchased quantity is usable and the recipe’s recorded weights match the quantities prepared. It excludes labour, utilities, packaging, wastage beyond any specified yield, tax, overhead and other costs. The result is ingredient cost per serving under those assumptions, not a menu price or net profit.

Keep measurement units consistent

Convert only between units that measure the same kind of quantity. Kilograms and grams can be converted by scale; litres and millilitres can be converted by volume. Mass cannot be converted to volume without an ingredient-specific density. “Piece” counts work only when the purchased and recipe quantities refer to the same defined item size.

For example, comparing a pack cost per kilogram with a recipe quantity in grams is valid after unit conversion. Comparing a litre purchase with a gram recipe amount is not valid from those values alone. Do not silently treat a litre of oil, flour or sauce as one kilogram. If conversion data is not known, keep units separate or obtain a measured conversion.

Yield, batches and portion definitions

Use a measured usable yield when trimming or cooking changes the purchasable quantity. If a 1-kilogram raw pack costs ₹300 and the documented usable yield is 80%, the edible amount is 800 grams and its cost per usable kilogram is ₹300 ÷ 0.80 = ₹375. A 200-gram usable portion would then cost ₹75. State whether recipe quantity uses as-purchased or edible-portion weight.

Record the number and size of servings a batch actually produces. If a recipe is described as 12 servings but service portions vary, the calculated per-serving value may not match what is plated. Recalculate when pack prices, quantities, yields or portion sizes change, and keep the measurement date with the source price.

What this calculation leaves out

Match purchase units to recipe units

Convert quantities using a documented conversion for the ingredient; grams and millilitres are not interchangeable by default. If trim or preparation leaves only part of a purchased ingredient usable, account for the full purchase cost against the usable yield. A batch sheet can list ingredient, amount, purchase-unit price and yield adjustment. Add the ingredient costs, then divide by the number of consistent portions actually produced. For example, a ₹2,400 batch that yields 24 portions costs ₹100 in ingredients per portion. Changing portion size or yield changes that result.

Record the invoice date, units, edible yield, portion size and batch output. Recalculate when a specification, supplier price, recipe or serving changes. Recipe cost is not the same as inventory-based period food cost: one estimates a dish, the other summarizes stock movement and sales over dates. Labour, fuel, rent, packaging and platform fees are excluded unless shown separately. Label those omissions so ingredient cost is not mistaken for total production cost.

Ingredient cost is only the included scope. It does not automatically include staff time, rent, energy, equipment, delivery fees or a desired margin. Do not call the result total dish cost unless those components are included. For the next calculation, read restaurant food-cost percentage, fixed and variable restaurant costs, and menu-item contribution margin.