Last October, a bistro owner watched his food costs jump 12% without changing a single recipe. The culprit? He kept ordering summer ingredients at winter prices while his customers had already switched to heartier dishes. Seasonal misalignment between purchasing and sales destroys profit margins faster than most realize.
Why seasonal changes cost you money
Most hospitality businesses order out of habit. Same products every week, same quantities. But seasons shift faster than your ordering rhythm, and that disconnect hits your bottom line hard.
⚠️ Watch out:
Asparagus costs €18/kg in March, €8/kg in May, and €25/kg again in August. Without adjustments, you'll sometimes pay triple what you should.
Check your sales data from last year
Your own sales history beats any seasonal guide. What moved in September last year? Which dishes collected dust?
💡 Example:
Bistro De Zon reviews September 2023:
- Gazpacho: dropped from 40 to 8 portions weekly
- Stew: jumped from 5 to 35 portions weekly
- Salade nicoise: fell from 25 to 10 portions weekly
Result: slash summer ingredient orders, boost winter stock
Create a transition menu for 2-3 weeks
Don't flip directly from summer to winter offerings. Bridge both seasons with adaptable dishes that work in either direction.
- Soups that work hot or cold (tomato, pumpkin)
- Salads featuring roasted vegetables
- Pastas highlighting seasonal produce
- Fish and meat preparations that transcend seasons
Adjust your purchasing frequency
Some products need more frequent, smaller orders during seasonal transitions. Others benefit from less frequent, bulk purchasing. One of the most common blind spots in kitchen management is maintaining the same ordering rhythm year-round, regardless of how ingredient prices and shelf life change with the weather.
💡 Example summer-to-fall transition:
Order more frequently (smaller batches):
- Fresh herbs (declining sales volume)
- Delicate lettuce (shorter shelf life in humid conditions)
- Summer vegetables (rapidly escalating prices)
Order less frequently (larger volumes):
- Winter vegetables (extended shelf life, stable pricing)
- Dried goods (increased soup and sauce production)
- Frozen items (emergency backup stock)
Monitor your food cost per dish weekly
Seasonal shifts make food costs volatile. Track your 5 top-selling dishes weekly for cost fluctuations.
Focus extra attention on dishes containing:
- Fresh vegetables and fruits
- Seasonal fish varieties
- Premium seasonal ingredients (truffles, asparagus, etc.)
⚠️ Watch out:
A dish running 30% food cost in August can spike to 40% by October due to pricier ingredients. Monitor weekly, not monthly.
Communicate changes to your team
Your kitchen staff must understand what's shifting. Which ingredients are getting pricier? Where should they exercise more caution? Which dishes need adjusted portion sizes?
Be specific:
- "Tomatoes cost 40% more now—use 150g instead of 200g"
- "Pumpkin's cheap right now, so portions can be generous"
- "Basil jumped from €3 to €8 per bunch—use sparingly"
Plan your menu update 2 weeks ahead
Don't wait for seasonal changes to hit. Plan your new menu 2 weeks early and test promising new dishes immediately.
💡 Example September planning:
Week 1: Test 2 autumn dishes as daily specials
Week 2: Calculate food costs for new dishes, fine-tune portions
Week 3: Launch updated menu, phase out summer offerings
Week 4: Analyze sales performance, make necessary tweaks
A system like KitchenNmbrs shows you immediately how seasonal changes impact your food cost, letting you adjust quickly before profits suffer.
How do you plan a seasonal change? (step by step)
Analyze last year
Check your sales data from the same period last year. Which dishes sold well, which poorly? Note the top 3 risers and top 3 fallers per month.
Check supplier prices
Ask your supplier for seasonal prices for the coming 8 weeks. Which products get more expensive, which cheaper? Make a list of the biggest price changes.
Calculate new food costs
Recalculate the food cost of your current bestsellers with the new ingredient prices. Dishes above 35% food cost need to be adjusted or removed.
Test new dishes
Introduce 2-3 new seasonal dishes as daily specials. Test for 1 week, measure sales and feedback. Only successful dishes go on the new menu.
Adjust your ordering rhythm
Change your ordering frequency for seasonal products. More expensive ingredients more often in small quantities, cheap seasonal products in larger batches.
✨ Pro tip
Review your ingredient costs every 10 days during seasonal transitions. This catches price spikes before they destroy your margins and gives you time to adjust portions or switch suppliers.
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
How far in advance should I plan a seasonal change?
Start preparing 3-4 weeks ahead. Test new dishes 2 weeks before overhauling the menu so you can still make adjustments.
Which dishes work year-round?
Pastas, risottos, and fish or meat dishes with neutral sides adapt easily. You can swap seasonal vegetables without changing the core recipe.
What if my supplier can't give seasonal prices in advance?
Check online wholesale prices or get quotes from a second supplier. As a fallback, assume 20-30% increases for out-of-season products.
What should I do with excess old stock during seasonal transitions?
Convert it into discounted daily specials, use for staff meals, or incorporate into other dishes. Selling cheap beats throwing away entirely.
📚 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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