Seasonal menu costing: pricing a menu built on ingredients that change price every week
Costing seasonal specials when tomato, game and berry prices move weekly — re-costing cadence, trigger thresholds, and substitutions that protect margin.
Core menu items earn their keep through stability: chicken, rice and onions do not lurch 40% between deliveries. Seasonal dishes trade that for freshness, lower headline cost and marketing pull — working only if costing matches the volatility. A spring pea risotto costed at €4.10 per portion in late April may run €5.25 by early June when local supply ends. Still selling at €19, its food cost went from 22% to 28% with no decision made.
Why seasonal ingredients break your costing
- Season windows compress supply: early asparagus falls from €6/kg to €4/kg then climbs past €7 — nearly 3× in ten weeks.
- Weather hits thin-margin crops hardest: one hailstorm takes stone fruit from €2.20/kg to €3.80/kg overnight, and the price sticks all season.
- Quality shifts under the same name: mid-season tomatoes at €3.50/kg with 90% usable yield beat early ones at €2.80/kg with 65%: cost by usable yield.
- Substitution cuts both ways: when your fish vanishes, the alternative may run 15–30% dearer, and you take it at 7am.
Following one special through summer
A bistro runs a grilled peach and burrata salad as a summer special at €16, costed at launch with peaches at €2.40/kg (€1.05/portion).
| Weeks 1–2 | €4.85 / €16 = 30% | On target; peaches plentiful |
|---|---|---|
| Week 5 | €5.70 / €16 = 36% | Peaches +35%, burrata +€0.40; crosses 8% |
| Week 6 | Swap to figs at €2.90/kg | Cost back to €4.95 = 31%; no menu change |
| Week 9 | Figs spike too; price to €17.50 | 33% — fine for a farewell item |
Fourteen weeks survived because one slot was flexible and thresholds were written before the season started. Neither fix needed a reprint or a guest conversation.
Running the cadence
- 1Cost at launch, plus a stress case. Cost it at current prices AND at +20% on the two most volatile ingredients. If the stressed version exceeds target by 3+ points, redesign before launch rather than firefight after.
- 2Re-cost weekly while volatile. Each Monday, re-pull invoice prices for the five biggest cost drivers and recalculate. Log it beside the original so the trend reads at a glance.
- 3Apply the triggers. Over 8% or €0.40: swap the flexible ingredient first. Still above, or no swap available: raise price 5–10%. Scarcity ahead: plan the exit date.
- 4Step down and close out. Once prices hold for three weekly checks, move to monthly re-costing. When the dish leaves, record final costing and sales mix to calibrate next season's stress case.
FAQ
- How often should I re-cost seasonal dishes?
- Weekly while main ingredients are in season or moving week to week. Once prices are flat for three checks, monthly is enough. A fixed quarterly schedule defeats seasonal cooking.
- What size price move should trigger action?
- One absolute number and one percentage, whichever first — say €0.40 or 8%. Absolutes catch cheap ingredients; percentages catch expensive ones. Two breaches in a row: act today.
- Should I just raise prices when seasonal costs rise?
- Not first. Swap within the flexible slot if you can — guests notice a price change more than a fig replacing a peach. Raise prices when the swap is exhausted or the whole category moved. A framed supplement tied to a visible story holds better than silent increases.
- Doesn't this add hours of admin every week?
- About 20 minutes per special: five invoice lines, one column, one comparison. A 6-point drift on a dish doing 60 covers a week costs ~€250 a month — ten specials, €2,500.
Keep reading
- Recipe costing: know the real cost of every plate
Accurate recipe costing converts pack prices into edible yield, batch cost and a defensible plate cost, including sauces and garnish.
- Food cost percentage: the one number that tells you if your margins are working
What food cost percentage actually measures, where the target should sit, and how to fix it when it drifts.
- Menu design psychology: how layout, placement, and framing drive what customers order
The science of menu design: eye movement patterns, the golden triangle, anchoring, and how to structure a menu that sells itself.
Browse by category
Want to review your purchasing?
Submit the details and we will confirm which invoices are useful.
Get in touch