Many restaurant owners think seasonal menus are impossible to price profitably — that's completely wrong. Sure, ingredient prices swing wildly throughout the year, but you can absolutely maintain healthy margins. The secret lies in weighted averages and smart safety margins.
Why seasonal products affect your margin
With seasonal products, your purchase prices change drastically throughout the year. Asparagus costs €18/kg in March, €8/kg in May. Adjusting your menu price every month doesn't work — guests expect stable prices.
⚠️ Heads up:
Many seasonal restaurants calculate based on the lowest seasonal price, but forget about the expensive months. This causes them to lose money in the early and late season.
Calculate your average seasonal price
The key is working with a weighted average price across the entire season. Don't just count the months you serve the product, but also how much you sell each month.
? Example:
You serve asparagus from March through June:
- March: €18/kg - 20 kg sold
- April: €12/kg - 50 kg sold
- May: €8/kg - 80 kg sold
- June: €14/kg - 30 kg sold
Total costs: (20×€18) + (50×€12) + (80×€8) + (30×€14) = €2,400
Total sold: 180 kg → Average price: €13.33/kg
Build in a safety margin
Seasonal prices are unpredictable. A late frost can make asparagus 40% more expensive. That's why you should build in a safety margin of 15-20% to your average price.
- Calculate your average seasonal price
- Add 15-20% for unexpected price increases
- Use this as the basis for your food cost calculation
? Example:
Average asparagus price: €13.33/kg
With 20% safety margin: €13.33 × 1.20 = €16.00/kg
Calculate with €16/kg for your cost price calculation
Monthly check and adjustment
After managing kitchen operations for nearly a decade, I've learned that checking actual purchase prices against your calculated average every month is non-negotiable. This way you'll see if your margin is on track or if you need to adjust.
- Record actual purchase prices per month
- Compare with your calculated average
- Adjust your safety margin if prices are structurally higher
Prepare alternative ingredients
Always have a Plan B ready for extreme price increases. Prepare recipe variations with similar but cheaper ingredients.
? Example:
Main recipe: asparagus risotto (€16/kg)
Alternative: zucchini-asparagus risotto (50/50 mix)
Savings: 30% on ingredient costs during extreme price spikes
Seasonal menu strategy
Consider a limited seasonal menu with higher margins. Guests often accept higher prices for authentic seasonal products if you communicate this well.
- Limit seasonal dishes to 3-4 items
- Communicate the seasonal value to guests
- Calculate with 25-30% food cost instead of 30-35%
Related articles
How do you calculate margins with seasonal products?
Gather historical price data
Record purchase prices from last season per month. Ask your supplier for price expectations for the coming season. This forms the basis of your calculation.
Calculate weighted average price
Multiply each month's price by expected sales volume. Add up all costs and divide by total quantity. This gives you the actual average price per kilo.
Add safety margin
Add 15-20% to your average price for unexpected price increases. Use this amount for your food cost calculation and menu price determination.
✨ Pro tip
Track your seasonal ingredient costs weekly during the first 3 weeks of each season — prices fluctuate most dramatically during these transition periods. You'll catch expensive surprises before they destroy your monthly margins.
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Frequently asked questions
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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
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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