Cost price calculation for exclusive seaside restaurants requires extra attention to seasonal ingredients, fresh fish and higher quality costs. Many chef-owners on the coast underestimate the impact of fresh seafood on their food cost. In this article you'll learn step-by-step how to calculate the real cost price for dishes in an exclusive seaside restaurant.
Gather all ingredients with seasonal prices
At exclusive seaside restaurants, it's all about fresh, local ingredients. Think fresh fish from the fishing boat, local oysters and seasonal vegetables. These ingredients have highly fluctuating prices.
💡 Example:
Sole from the North Sea for 2 people:
- Sole (400g): €32.00 (€80/kg seasonal price)
- Butter (30g): €0.36
- Parsley (5g): €0.15
- Lemon (half): €0.50
- Sea salt (2g): €0.08
- Olive oil (10ml): €0.20
Total ingredients: €33.29 for 2 people = €16.65 per person
Keep track of the daily price with each supplier. Fish can vary 20-30% per day. What cost €60/kg yesterday can be €80/kg today.
Account for trimming loss and cooking loss
Whole fish has significant trimming loss. With sole you lose the head, bones and skin. This can be 35-45% of the purchase weight.
💡 Example trimming loss calculation:
Whole sole of 600g for €24.00:
- Purchase price: €40/kg
- After filleting: 350g usable
- Trimming loss: 42%
- Real fillet price: €40 ÷ 0.58 = €69/kg
You're paying €69/kg for the fillet, not €40/kg!
⚠️ Watch out:
Many exclusive restaurants calculate with the purchase price per kilo, not with the real fillet price after trimming loss. This makes your food cost seem lower than it actually is.
Calculate the food cost percentage
For exclusive seaside restaurants the standard food cost formula applies, but watch out for high ingredient costs. Fresh fish and premium ingredients make a higher food cost normal.
Formula: Food cost % = (Ingredient costs ÷ Selling price excl. VAT) × 100
💡 Example calculation:
Sole fillet on the menu for €48.00 (incl. 9% VAT):
- Selling price excl. VAT: €48.00 ÷ 1.09 = €44.04
- Ingredient costs: €16.65
- Food cost: (€16.65 ÷ €44.04) × 100 = 37.8%
This is higher than the standard 28-35%, but normal for exclusive fish dishes.
Account for seasonal variation
Seaside restaurants deal with extreme seasonal variation. Both in purchasing and sales. Calculate your cost price separately for summer and winter prices.
- Summer season: Higher purchase prices due to tourism, but also higher selling prices possible
- Winter season: Lower purchase prices, but also less turnover per day
- Storm periods: No fresh fish available, switching to frozen increases food cost
Many exclusive restaurants use a dynamic menu with daily prices. This helps keep food cost under control with highly fluctuating purchase prices.
Benchmark for exclusive seaside restaurants
Exclusive seaside restaurants often have a higher food cost than regular restaurants. This is due to the focus on fresh, premium ingredients.
- Fish dishes: 35-42% food cost is normal
- Meat dishes: 28-35% food cost
- Vegetarian dishes: 22-30% food cost
⚠️ Watch out:
A higher food cost is acceptable if your guests are willing to pay for the exclusivity. Focus on the total margin per dish, not just the food cost percentage.
With a system like KitchenNmbrs you can adjust your cost prices daily to match fluctuating purchase prices, without having to calculate all trimming losses and formulas yourself.
How do you calculate cost price for exclusive dishes by the sea?
Gather daily prices of all ingredients
Note the current price of fresh fish, shellfish and other premium ingredients. Ask your supplier for the daily rate, because prices can vary 20-30% per day.
Calculate real price per kilo after trimming loss
Divide the purchase price by the yield percentage. With 40% trimming loss you divide by 0.60. This gives you the real price of the usable product.
Add up all ingredients per portion
Calculate how much each portion costs in ingredients. Don't forget garnishes, sauces and oils. Even those small amounts add up with premium dishes.
Calculate food cost percentage
Divide the ingredient costs by your selling price excluding VAT and multiply by 100. For exclusive fish dishes, 35-42% food cost is normal.
✨ Pro tip
Always check with your fish supplier for the expected price development for the coming week. This way you can anticipate price increases and adjust your menu in time.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
What is a normal food cost for fresh fish dishes?
For exclusive fish dishes by the sea, 35-42% food cost is normal. This is higher than regular restaurants due to the focus on fresh, premium ingredients and high trimming loss.
How do I deal with strongly fluctuating fish prices?
Keep track of purchase prices daily and adjust your cost price calculation. Many exclusive restaurants work with daily menus or 'market price' to stay flexible.
Should I always include trimming loss in my cost price?
Yes, always. With whole fish you lose 35-45% to head, bones and skin. If you don't account for this, your food cost seems much lower than it actually is.
Can I maintain the same food cost as regular restaurants?
No, exclusive seaside restaurants often have 5-10 percentage points higher food cost due to premium ingredients. Focus on the total margin per dish, not just the food cost percentage.
How often should I update my cost prices?
With fresh fish at least weekly, with strongly fluctuating prices even daily. Check seasonal products with each new delivery for price changes.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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