Seasonal menu changes require adjusted margin targets. Heavy winter dishes cost more than summer salads, but guests also pay different prices. You need to adjust your food cost targets to what's actually on the table, or you'll lose control of your profit.
Why seasonal margins matter
In winter you sell more stews, soups and game. In summer more salads, fish and cold dishes. These have completely different cost prices:
- Winter dishes: often 30-38% food cost
- Summer dishes: often 25-32% food cost
- Seasonal ingredients: price fluctuations up to 40%
If you use the same margin targets all year round, you're steering wrong.
💡 Example:
Restaurant with mixed menu:
- Summer: Caesar salad €16.50 → food cost 28%
- Winter: Venison stew €28.00 → food cost 35%
- Annual average: 31.5% food cost
Both seasons are profitable, but with different targets.
Calculate your seasonal food cost targets
Start with your current menu and divide dishes into seasonal categories:
Step 1: Analyze your current mix
- Which dishes do you sell mainly in winter?
- Which mainly in summer?
- What are the food costs of both groups?
Step 2: Calculate weighted averages
Formula: (Food cost dish A × Number sold A) + (Food cost dish B × Number sold B) / Total number
💡 Example calculation:
Winter month (December):
- Stew (35% food cost): 120× sold
- Winter soup (30% food cost): 80× sold
- Fish (28% food cost): 60× sold
Weighted average: (35×120 + 30×80 + 28×60) / 260 = 32.3% food cost
Seasonal ingredients and price fluctuations
Ingredient prices fluctuate by season. Keep this in mind:
- Vegetables: 20-40% cheaper in season
- Game: only available October-February
- Asparagus: April-June, price difference 300%
- Shellfish: more expensive in warm months
⚠️ Note:
Update your cost prices monthly for seasonal ingredients. An asparagus in March costs €24/kg, in May €8/kg. That saves 15% food cost on an asparagus dish.
Practical adjustment of margin targets
Set realistic targets per season:
Summer (April-September):
- More cold dishes and salads
- Lower food cost possible: 25-30%
- Compensation: often lower average check
Winter (October-March):
- Heavier, warmer dishes
- Higher food cost acceptable: 30-35%
- Advantage: higher average check
💡 Example seasonal strategy:
Bistro with 80 covers/day:
- Summer: 28% food cost, €22 average check
- Winter: 33% food cost, €26 average check
- Gross margin both: €15.84 vs. €17.42
Winter generates more despite higher food cost.
Calculate menu adjustments
When switching seasons, you don't just adjust ingredients, but also prices:
- Calculate new cost prices with seasonal prices
- Adjust menu prices where needed
- Account for customer acceptance
An app like KitchenNmbrs helps you quickly calculate what seasonal changes mean for your margins, without manually recalculating all cost prices.
How do you adjust margin targets per season?
Analyze your current seasonal mix
Make a list of all dishes and note which season they sell most in. Calculate the food cost of each dish with current ingredient prices.
Calculate weighted food cost per season
Multiply the food cost of each dish by the number of times you sell it. Divide the sum by the total number of dishes for your seasonal average.
Set realistic targets per season
Accept that winter can have 3-5% higher food cost than summer. Compensate by raising menu prices or focusing on dishes with better margins.
✨ Pro tip
Check with your supplier for seasonal prices of regular ingredients. Many suppliers tell you in January what vegetables will cost in the coming season.
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
Do I need to adjust my margin targets every month?
No, work with two seasons: summer (April-September) and winter (October-March). Within each season you can make small adjustments for extreme months like December or July.
What if my winter dishes have too high food cost?
Raise the menu price or find cheaper alternatives for expensive ingredients. Customers often accept higher prices for seasonal dishes like game or truffles.
How do I avoid surprises when switching seasons?
Calculate what your winter menu will cost in August and what your summer menu will cost in February. That way you can adjust prices in time before the season starts.
Can I keep the same food cost targets for both seasons?
You can, but then you'll need to adjust your menu prices more often. It's easier to use different food cost targets that match your seasonal dishes.
Which ingredients fluctuate most in price?
Fresh vegetables, fruit, fish and shellfish have the biggest price swings. Game is only available in certain months. Meat and dairy are more stable.
📚 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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