While most restaurants track their overall food costs religiously, they often ignore what happens to individual specials over time. Your summer asparagus special might've started at 28% food cost in May, but by August you could be hemorrhaging money at 40% without realizing it. The culprit? Ingredient prices rise, but your menu price stays frozen.
Why specials become profit killers
You launch that delicious summer special with fresh asparagus for €24.50. In May asparagus costs €8 per kilo, giving you a solid 28% food cost. Perfect, right? But here's what happens: August rolls around and asparagus now costs €14 per kilo — yet you're still charging €24.50.
⚠️ Watch out:
Most restaurants let specials run for months without tracking cost fluctuations. Profit slowly bleeds away while you focus on other operations.
The real damage calculation
Want to see exactly what's happening to your margins? Compare your original cost price with today's numbers for the same dish.
💡 Example: Asparagus special breakdown
Menu price: €24.50 (incl. 9% VAT) = €22.48 excl. VAT
- May cost price: €6.30 (28% food cost)
- August cost price: €8.90 (40% food cost)
- Profit loss per portion: €2.60
Selling 20 portions weekly? You're losing €2,704 annually
Based on real restaurant P&L data we've analyzed, this scenario plays out constantly. Operators don't realize how quickly seasonal price swings can destroy their margins.
Your action triggers
Three critical moments demand immediate attention:
- 35% food cost threshold: Time to bump the price or tweak your recipe
- 40% food cost alarm: Pull the special immediately or make major changes
- Seasonal transitions: Always recalculate ingredient costs
💡 Example: Your three escape routes
That asparagus special hit 40% food cost. Here's how you fix it:
- Increase price to €28.50 (brings you back to 28%)
- Cut asparagus portion, add cheaper sides (return to €6.30 cost)
- Remove the special until next season
Monthly monitoring system
Set a monthly calendar reminder to audit your specials. You'll check current supplier prices for key ingredients and recalculate food cost percentages.
- Document original cost price and percentage
- Get updated pricing from suppliers
- Run new food cost calculations
- Make the call: modify, reprice, or discontinue
💡 Example: Monthly audit results
Four specials on your menu showed these changes:
- Summer special: jumped from 28% to 38% food cost
- Fish special: held steady at 31%
- Seasonal salad: improved from 33% to 29%
- Meat special: spiked from 30% to 42%
Decision: Reprice summer special, kill meat special
Automated tracking solutions
Tools like KitchenNmbrs automatically update your cost prices when you adjust ingredient costs. You'll instantly spot which dishes are bleeding money without manual calculations.
How do you calculate the impact of a running special?
Note the original data
Write down what the cost price and food cost were when you launched the special. Also the date and ingredient prices from back then.
Check current ingredient prices
Visit your supplier or check online what the main ingredients cost now. Calculate the new cost price per portion.
Calculate the difference and impact
Subtract the old cost price from the new cost price. Multiply by the number of portions per week and 52 weeks for the annual impact.
✨ Pro tip
Calculate food cost impact every 3 weeks for any special containing seasonal ingredients. Price volatility can destroy margins faster than you think — asparagus can double in cost within a month during off-season transitions.
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 often should I check my specials for food cost changes?
Monthly minimum, but every two weeks for highly seasonal ingredients. Fresh produce prices can swing dramatically in short periods.
What if my special is incredibly popular but has terrible food cost?
Try recipe modification first — reduce expensive ingredients or add cheaper fillers. If that fails, gradually raise the price or convert it to a limited-time offer.
Can I keep selling a special with 40% food cost?
Only if your other dishes run significantly lower food costs to balance it out. Otherwise, you're literally paying customers to eat that dish.
How do I justify price increases to regular customers?
Be transparent about seasonal market forces: 'Due to seasonal price changes, we're adjusting this special.' Most guests understand and appreciate honesty.
What's the ideal starting food cost for seasonal specials?
Aim for 28-30% maximum at launch. This gives you buffer room for inevitable price fluctuations without immediately hitting danger zones.
Should I warn customers when a seasonal special is ending?
Absolutely — create urgency with 'Last week for our summer asparagus special.' It often boosts final sales while you transition to new offerings.
📚 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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