How to Calculate the Real Cost of a Dish
A practical method to turn recipes, yields, packaging, and current supplier prices into an honest dish cost before you set or defend a menu price.
Food cost percentage is useful, but it is not the same as knowing what a dish actually costs today. Real dish cost starts with the recipe you cook, the yield you get, the packaging you ship, and the supplier prices sitting on the latest invoice — not the prices you remember from last month.
Start from the usable recipe, not the shopping list
List every ingredient and sub-recipe in the portion you sell. Include sauce bases, garnishes, and waste that disappears in prep. If the kitchen cooks 1.1 kg to plate 1 kg, the dish cost must carry that truth.
In Karu, sub-recipes stay linked so a change in garlic mayo updates every product that uses it instead of living in a forgotten cell.
Price from current supplier truth
Convert pack prices into the unit the recipe uses. A 5 kg bag is useless until you know the cost per gram actually going into the dish.
When the invoice changes, recalculate the dish before you argue about menu price. Quiet supplier moves are how 'good sellers' become weak contributors.
Add packaging and channel costs that travel with the dish
A plate in the dining room and the same product in delivery are not the same cost object. Boxes, labels, cutlery, and platform fees belong in the calculation when the channel uses them.
Once you have a real dish cost, compare it to the selling price and the margin your business actually needs after labor and fixed costs — not a generic industry percentage.
Operator checklist
Write the recipe for the sold portion, including sub-recipes and yield loss.
Convert the latest supplier packs into recipe units.
Attach packaging for takeaway or delivery versions.
Compare dish cost to selling price before changing the menu.
Sources
Related guides
Costing
Food Cost Percentage: The Number Every Menu Needs
A practical guide to calculating food cost percentage, reading the result, and turning it into better menu decisions.
Pricing
Restaurant Menu Pricing Formula: Price From Cost, Not Guesswork
How to move from ingredient cost to a selling price that protects margin without ignoring the market.
Recipes
Sub-Recipes: The Clean Way to Cost Sauces, Doughs, Bases, and Prep
Why recipes should be able to contain other recipes, and how that changes costing accuracy.