Seasonal dishes can be goldmines, but also loss-makers if you get the calculation wrong. On busy days every second counts, and complex dishes with many components can paralyze your kitchen. In this article you'll learn step-by-step how to calculate whether that new seasonal dish stays profitable and feasible, even when it's hectic.
Why seasonal dishes often go wrong
It seems so logical: asparagus is cheap in May, so you create a seasonal special. But then this happens:
- Preparation takes 12 minutes per plate instead of 6
- You have 4 different components that all need separate preparation
- On Saturday night your kitchen grinds to a halt because everything needs to be ready at once
- Your chef works overtime, sending your labor costs through the roof
The result: a dish that looks like it has 28% food cost on paper, but actually runs at a loss due to time constraints and stress.
The real costs of complex seasonal dishes
With seasonal dishes you need to look beyond just ingredient costs. There are extra factors involved:
💡 Example: Asparagus menu in May
Seasonal special: White asparagus with hollandaise, new potatoes and ham
- Ingredients: €8.50 per portion
- Preparation time: 12 minutes (normal: 6 minutes)
- Extra staff Saturday: €25/hour × 4 hours = €100
- Sold: 80 portions on Saturday
Extra labor costs per portion: €100 ÷ 80 = €1.25
Real cost price: €8.50 + €1.25 = €9.75
Calculate the 'busy day test'
For every seasonal dish you need to do the busy day test. Here are the steps:
1. Normal preparation vs. seasonal dish
- How many minutes does your average main course take?
- How many minutes does this seasonal dish take?
- Difference = extra time per portion
2. Capacity on busiest day
- How many main courses do you normally make on Saturday night?
- With this time difference: how many can you still make?
- Do you lose revenue due to slower service?
⚠️ Watch out:
If your seasonal dish takes more than 50% longer than your average dish, it becomes risky on busy nights. You can serve fewer guests.
Formula for seasonal dish profitability
Use this formula to check whether your seasonal dish is worth it:
Real cost price = Ingredients + (Extra time × Chef hourly wage ÷ 60) + Opportunity costs
💡 Example calculation:
Game dish in October - preparation time 15 minutes vs. 8 minutes normal
- Ingredients: €12.00
- Extra time: 7 minutes
- Chef hourly wage: €18
- Extra labor costs: 7 ÷ 60 × €18 = €2.10
Real cost price: €12.00 + €2.10 = €14.10
At €42 selling price (excl. VAT €38.53): food cost = 36.6%
Too high! Price needs to go up to €45+ or ingredients need to be cheaper.
Alternatives for complex seasonal dishes
If your seasonal dish doesn't pass the busy day test, you have these options:
1. Simplify the preparation
- Fewer components on the plate
- More prep work, less à la minute
- Simpler garnishes
2. Limit availability
- Only on quiet days (Monday-Thursday)
- Limited number per evening
- Lunch only, not dinner
3. Raise the price realistically
- Pass through the real costs
- Guests often accept higher prices for seasonal products
- Position as 'limited edition'
KitchenNmbrs for seasonal dishes
With a system like KitchenNmbrs you can quickly calculate what seasonal dishes really cost. You enter the ingredients and immediately see your food cost. This prevents you from creating seasonal specials that secretly lose money instead of making it.
How do you calculate whether a seasonal dish is feasible? (step by step)
Calculate the real ingredient costs
Add up all ingredients: main product, garnishes, sauces, oil, butter. Also account for trim loss - seasonal products often have more waste. Note the total cost price per portion.
Measure preparation time vs. normal dishes
Have your chef make the dish a few times and time it. Compare with your average main course. Extra time means extra labor costs, especially on busy days.
Calculate extra labor costs into your price
Calculate: (Extra minutes ÷ 60) × Chef hourly wage = Extra cost per portion. Add this to your ingredient costs. Check whether your food cost stays under 35% at your desired selling price.
✨ Pro tip
Always test new seasonal dishes first on a quiet evening. Measure the preparation time, check the food cost and see how your team handles it. Only then introduce it on busy days.
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
Can I charge more for seasonal dishes than normal dishes?
Yes, guests often expect higher prices for seasonal products. As long as you clearly communicate the added value (fresh asparagus, locally sourced game) they'll accept a surcharge of 10-20% on comparable dishes.
How do I prevent my kitchen from getting bogged down with complex seasonal dishes?
Limit the number of seasonal dishes on your menu at once to a maximum of 2-3. Make sure at least 80% of your menu consists of 'quick' dishes that your team can make blindfolded.
What if my seasonal dish becomes popular but takes too much time?
Simplify the preparation without sacrificing flavor. More mise-en-place, less à la minute work. Or raise the price and position it as a premium seasonal specialty.
How long should a seasonal dish stay on my menu?
As long as the main ingredient is seasonally available and affordable. Usually 6-10 weeks. Remove it once quality drops or the price becomes too high.
Should I account for failed portions with seasonal dishes?
Yes, new dishes always have a higher failure rate. Budget an extra 5-10% ingredient costs for the first few weeks, until your team masters the dish.
📚 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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