Recipe Costing, Step by Step: Purchase Unit to Served Portion

1. Record the evidence for each ingredient

Start with one dish you can observe being prepared. Give the recipe a name, portion definition and review date. For every ingredient, retain the supplier invoice or quote reference, effective date, pack price, packs per case, amount per pack and unit. Mark a price as an estimate when you have not checked it. A current invoice cannot fix an incorrect recipe quantity, and a weighed portion cannot establish an unknown invoice price.

Use the invoice price audit to check a changed pack or ambiguous OCR line. Convert compatible weights or volumes before multiplying: one pound contains 16 weight ounces, while a fluid ounce measures volume. Flour by volume needs a reviewed density to convert to weight. Each-to-weight conversions need a known item weight. Keep a conversion unresolved when those inputs are missing.

2. Match yield to raw, trimmed or cooked quantity

A recipe may specify raw input or cooked output. Both can be costed correctly, but their cost basis differs. If it lists the full purchased quantity, multiply by purchased cost and do not add the same loss again. If it lists a usable serving, spread the purchase cost over the quantity left after the relevant preparation. Record the exact stage weighed; trim yield alone does not establish cooked yield.

At $3 per purchased pound, a 6 oz raw input costs $1.125. A 6 oz cooked portion in this sample costs $1.875 because it requires more purchased product. These are different portions, not competing formulas. The USDA Food Buying Guide explains the AP-to-prepared-quantity relationship; use your own matching test for the recipe. The yield calculator helps check the arithmetic, and the cooking yield guide covers the cooking test itself with USDA-published yields for common cuts.

3. Build the whole plate

Do not leave sauces, garnish or a promised side outside the total. For a batch, sum its ingredient costs and divide by the measured finished output; retain that calculation beside the plate worksheet. A manual batch calculation does not mean the product automatically maintains nested recipes. If you allocate small shared items, record the spend and portion basis so the amount can be reviewed instead of becoming an unexplained allowance.

4. Name what the result can tell you

A target food cost percentage gives a price scenario, not an optimal selling price. At a chosen 30% target, $3 ÷ 0.30 = $10. Check the dish’s value, demand and other expenses before approving any change. Keep actual period food cost separate: opening inventory plus purchases minus closing inventory measures consumption over a period, and needs matching food sales.

5. Leave a clear review state

1. 1.Confirm every active ingredient has a known purchase cost, pack quantity, matching unit and relevant yield. Use a reviewed 100% yield only when there is no loss at that stage.
2. 2.Mark missing or uncertain lines for review. Show a known subtotal if useful, but withhold a complete food-cost or healthy-margin claim until the recipe is complete.
3. 3.Date the supplier evidence and the portion test separately. Recheck when an invoice, specification, preparation process or portion standard changes.
4. 4.Use the calculator’s save-draft control to keep an eligible recipe in the same browser for seven days, then review it after signup or sign-in. Confirm complete ingredients, source dates, units and yields before importing one hidden dish; saving the browser draft alone does not create a dish. Sample recipes and unitemized generic allowances cannot be imported.

Use the free recipe costing template to retain a worked sample and your source notes, or the AP/EP lesson for a printable practice exercise. Begin with one recipe and the next supplier invoice; that pair shows whether your maintenance process keeps the result understandable.