How to calculate what each dish really costs, and stop losing money without noticing

I'm going to tell you something you probably won't like. The answer may be hiding in one of the dishes that leave your kitchen most often. That dish everyone orders. The one you're proud of. The one that looks profitable because you sell it for quite a bit more than it costs. Or rather, more than you think it costs.

Because one thing is what you think a dish costs. And another altogether is what it really costs to put it in front of the guest.

The following story is fictional, but it reflects a situation that is far too common in hospitality.

Carlos had a burger that was the star of his restaurant. Brioche bun, beef, cheese, bacon, house sauce and chips. He sold it for €11 and hundreds went out every month. When he created the recipe, he did a quick calculation and concluded that making that burger cost him roughly €3.

So he thought: «I sell it for more than three times its cost. There's margin to spare.» And he kept selling it. One after another.

The problem is that cost was calculated by eye. He hadn't counted the sauce properly. Or the fryer oil. Or the full garnish. Or waste on some ingredients. He also hadn't updated the beef price after several supplier increases.

When he finally sat down and calculated it properly, he discovered the burger didn't cost €3. It cost €3.95. The difference was €0.95 per unit.

€0.95 may not sound like much. But Carlos sold 500 burgers a month. €0.95 × 500 burgers = €475 a month. Over twelve months: €475 × 12 = €5,700 a year.

Carlos wasn't necessarily losing €5,700 from the till. But he was earning €5,700 less than he thought, from a single dish. Now imagine the same error appearing in five, ten or twenty recipes on the menu.

Carlos didn't have a sales problem. He had a control problem. And this matters: you can have a full restaurant and still run a poorly profitable business. Because selling a lot does not mean earning a lot.

Calculating the cost of each dish isn't sitting down with a calculator because you have too much free time. Hospitality operators rarely have that problem. It's about knowing whether every time you sell a dish you're generating margin, or simply moving product, filling tables and paying bills.

The document that lets you calculate what each recipe really costs to prepare is called a recipe costing (or escandallo). Yes, I say that with care and respect. Because recipe costing is one of the pillars of any well-run restaurant. It's a bit like your mum. It keeps your feet on the ground. It tells you truths you sometimes don't want to hear. And it stops you making decisions based on impulse alone.

A recipe costing is a technical sheet that details:

• The ingredients in a recipe.
• The quantity used of each ingredient.
• Its purchase price.
• Waste or yields.
• The total preparation cost.
• The final cost per portion.

With this sheet you can see how much money each dish leaves, keep portions consistent, reduce waste and set prices using real data. Not based on what the place next door charges. Or on what feels expensive or cheap. Or on the classic: «I reckon we're fine at this price.»

This guide is split into short pieces so you can apply what you need today, without swallowing an entire treatise. Start with the practical calculation, then move on to metrics and control:

• How to build a recipe costing step by step, with the burger example.
• Food cost and gross margin: how much you really earn on each sale.
• Theoretical vs actual cost, and the mistakes that make a costing lie.
• How to design a more profitable menu without costing the whole list in one day.

Start with the step-by-step recipe costing if you haven't yet calculated the cost of your star dishes. If you already have sheets, jump to food cost and gross margin.