Wedding Banquet for 120: Oven Capacity, a 68°C Load, and an Over-Delivery
You are the sous chef for a wedding banquet of 120 guests with plated service at 19:30. The menu is chicken suprêmes with a thyme jus, dauphinoise potatoes and green beans. The kitchen has three convection ovens, each holding 48 suprêmes and needing 40 minutes at 175°C to reach a 74°C core; loading an oven takes 5 minutes and the cavity drops about 20°C every time a door is opened. Plating runs at 20 plates per 6 minutes with four commis. The supplier delivered 26 kg of suprêmes at 08:40 at 6°C. The order was for 24 kg at 4.20 per kg, and you planned 180 g raw per portion with 8% total trim and cooking loss. At 19:12 the probe in the first load reads 68°C in the thickest piece, and two trays of beans are already on the pass waiting.
1. Build the cooking and plating timeline that gets 120 hot plates out from 19:30, showing your arithmetic. Is the equipment and staffing adequate?
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Capacity: 3 ovens × 48 = 144 portions, which covers 120 with 24 spare, so one round is enough. But the spare capacity is thin: if one oven underperforms you lose 48 portions and have no time for a second 40-minute cycle.
Cooking: if you load at 18:45, 18:50 and 18:55 (5 minutes per oven, door closed between loads), the loads finish 19:25, 19:30 and 19:35 - the last one is after service starts. Load 10 minutes earlier, from 18:35, and everything is out by 19:25, with the earliest load held hot at ≥63°C. Do not open doors early to look; each opening costs about 20°C of cavity heat and adds time.
Plating: 120 ÷ 20 = 6 batches × 6 minutes = 36 minutes, so first plate 19:30 and last plate about 20:06. Holding time for the 19:25 load is roughly 40–50 minutes - acceptable against a 90-minute hot-hold limit at ≥63°C, provided trays are not stacked and the holding unit is probed.
Verdict: oven capacity is adequate, but only just, and the current start time is too tight. Four commis is correct at 20 plates per 6 minutes, but the 36-minute spread means the first table eats well before the last - acceptable at a wedding only if the head waiter calls tables in sequence and is told the plan in advance.
2. At 19:12 the first load probes 68°C in the thickest piece. What do you do with that load, and why is holding it at 63°C not an acceptable answer?
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Do not serve it. 68°C is below the 74°C target for poultry in the thickest part; the load has not reached temperature and no amount of hot-holding converts an undercooked product into a safe one.
Options weighed:
- Full 40-minute re-cycle - delivers around 19:55 and destroys the service timeline. Rejected as the first choice.
- Finish at higher heat - return the load to a 200°C oven for 8–12 minutes and re-probe the thickest piece on each tray until every tray reads ≥74°C. This is the fastest safe route; trays that already read 74°C go straight to the hot cupboard.
- Check the probe - an unwashed or uncalibrated probe can read low. Calibrate in iced water (0°C). But the default is to trust the reading and re-cook; a false re-cook costs time, a false pass costs a wedding.
Why 63°C holding is not the answer: hot-holding preserves temperature in food that has already reached a safe core temperature. It does not continue the cooking process in a meaningful, verifiable way, and "it will carry over" is not a measurement. The corrective action must be a measured return to ≥74°C.
Also do: check the other two loads now, not at 19:25 - if one oven is running cold, all three loads are suspect. Record the deviation, the time, the temperature and the action.
3. Using the portion specification, work out how much suprême you actually needed and what the 26 kg delivery cost you. What do you do about the delivery?
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Requirement: 120 portions × 0.180 kg = 21.6 kg of usable meat on the plate.
Purchase quantity: with 8% total trim and cooking loss, buy 21.6 ÷ 0.92 = 23.48 kg, so 23.5 kg. The 24 kg ordered was correct to within 0.5 kg.
Cost per portion: 23.5 kg × 4.20 = 98.70; 98.70 ÷ 120 = 0.82 per cover.
What the delivery actually cost: 26 kg delivered against 23.5 kg needed = 2.5 kg surplus = 2.5 × 4.20 = 10.50 wasted on this function. Costed on the delivered weight, the portion cost is 26 × 4.20 = 109.20 ÷ 120 = 0.91 - about 0.09 per cover higher than the menu was costed at. On a 120-cover banquet that is small; across a month of functions it is not.
Action: check the delivery note against the purchase order before signing, note the 2.5 kg excess, and either return it or record it as an over-delivery so purchasing can chase the supplier. Never sign for the delivered quantity without reading it. Separately: the 6°C delivery temperature is a bigger problem than the 2.5 kg - fresh poultry should arrive at ≤4°C, so the consignment should be assessed against the receiving standard, not just accepted and chilled.