Recipe Costing, Step by Step

August 10, 2026 · 4 min read

To cost a recipe, convert each ingredient's purchase price into an edible-portion cost using its yield, multiply by the quantity the recipe uses, add sub-recipes at their measured cost per unit, then add a Q factor for oil, seasoning and garnish. The result is your plate cost.

Most recipe costing guides give you step one — multiply quantity by price — and stop. That method reliably understates a plate by 10–25%, because it ignores everything that happens between the loading dock and the pass. Here is the whole thing.

Step 1 — Convert purchase prices to edible-portion costs

The invoice price is what a pound of product costs. Your recipe needs what a pound of usable food costs. Those differ by the yield — which is to say, by the trim loss between the two.

Edible portion cost

EP cost per unit = AP cost per unit ÷ Yield %

Weighed a case before and after prep? The yield calculator turns those two weights into the EP cost and shows what the invoice price would have understated.

The same invoice, converted
Ingredient	Invoice price	Yield	EP cost
Salmon side	$10.35/lb	72%	$14.38/lb
Asparagus	$3.20/lb	82%	$3.90/lb
Fingerling potatoes	$2.09/lb	95%	$2.20/lb
Shallots	$2.80/lb	78%	$3.59/lb

Yields vary by supplier, spec and how your team trims — published tables are a starting point, not an answer. Run a butcher's test once per major item and you have a number good for years.

Step 2 — Cost your sub-recipes separately

Anything made in a batch and used as an ingredient — stock, sauce, dough, compound butter — gets costed once, as cost per ounce, and then flows into every dish that uses it.

Worked example · Beurre blanc, one batch

Shallots, 4 oz EP at $3.59/lb: $0.90
White wine, 12 oz: $2.25
Cream, 6 oz: $0.71
Butter, 16 oz at $4.40/lb: $4.40
Total batch cost: $8.26
Measured yield after reduction: 17.5 oz
Cost per oz: $0.47

Measured yield, not calculated. The recipe totals 38 oz of ingredients and produces 17.5 oz of sauce — costing against the input weight would understate it by more than half.

Step 3 — Build the plate

Every EP cost and sub-recipe cost from the two steps above becomes one line. Build it on paper, in a sheet, or in the recipe cost calculator — the arithmetic is the same, and the discipline is that nothing on the plate gets left off.

Worked example · Pan-seared salmon, full plate cost

Salmon, 6 oz at $14.38/lb EP: $5.39
Fingerlings, 5 oz at $2.20/lb EP: $0.69
Asparagus, 4 oz at $3.90/lb EP: $0.98
Beurre blanc, 1.5 oz at $0.47/oz: $0.71
Herb garnish + lemon: $0.22
Q factor — oil, butter, seasoning: $0.30
Plate cost: $8.29

Step 4 — Add the Q factor honestly

The Q factor covers what's too small or too shared to cost individually: cooking oil, butter, salt, condiments, the complimentary bread. Don't guess it — derive it.

Q factor from real data

Monthly spend on uncosted items ÷ Monthly covers

Most kitchens land between $0.25 and $0.75 per cover. If you serve bread, expect the high end.

Step 5 — Turn plate cost into a price

Price from a target margin

Menu price = Plate cost ÷ (1 − Target margin)

Worked example · Pricing the salmon

Plate cost: $8.29
Target margin: 71%
Cost-derived price: $28.59
Rounded to menu convention: $29.00
Food cost at $29: 28.6%

The cost-derived price is where the decision starts, not where it ends — see how to price a menu item.

What makes a costing go stale

A plate cost is a photograph of supplier prices on the day you built it. Three things age it:

Ingredient price moves. Proteins and produce move weekly. A dish whose main ingredient rose 15% needs recosting, not a quarterly review.
Pack-size changes. A supplier holding the case price while shrinking the pack has raised your unit price silently — see pack size.
Spec drift. The line plates 7 oz on a 5 oz spec because 5 oz looks empty. That's a recipe problem, not a discipline problem: fix the card and the price together.

Should labour be in the recipe cost?

No. Plate cost is ingredients only. Kitchen labour doesn't scale per plate the way ingredients do, so it's tracked separately and combined with food cost as prime cost.

How do I cost a dish with variable components?

Cost the most expensive reasonable version. A build-your-own bowl should be costed at the combination guests actually pick most often, and spot-checked against the highest-cost combination to make sure it doesn't go negative.

Is a spreadsheet enough?

For ten to twenty dishes with stable prices, genuinely yes — and we'd rather tell you that than pretend otherwise. It stops being enough when ingredient prices move faster than you can re-enter them, which is where the maintenance burden, not the math, becomes the problem.

Everything above is in our free recipe costing spreadsheet template — the yield correction, the per-unit conversion and the target-price formula, already written, opening straight into Excel or Google Sheets. No email, and no obligation to ever hear from us again.

Skip the spreadsheet maintenance.

Photograph your menu and Marji builds the costed dish list. Photograph an invoice and every affected recipe updates itself — with the yield math already applied.

Try it free →