Cooking Seafood for a Crowd: Easter Entertaining Made Easy

TL;DR — The secret to feeding 8 to 20 people without losing your mind is simple: do everything that can be done in advance, and only cook to order what takes under 5 minutes.

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The Rule That Saves Easter

Pan-searing 15 individual fish fillets to order is not a dinner party strategy. It is a one-way path to a cold kitchen, stressed host, and lukewarm food. Cooking seafood for a crowd works when you divide the menu into what can be prepped the night before, what can be cooked in bulk an hour ahead, and what needs just a few minutes at service.

That division — not the recipes themselves — is what makes the difference.

How Much to Buy

The numbers are simple. For a sit-down Easter lunch where seafood is the main event, budget 200g of fish fillet per person, 1 kg of whole cooked prawns per every 4 people (that's about 250g per person shell-on), and oysters by the dozen — one dozen serves 3 to 4 as a starter.

For 12 people at a sit-down lunch: 2.4 kg of fish fillets, 3 kg of whole prawns, and 3 dozen oysters covers you comfortably. Add 15% to whatever number you land on. Leftover Easter seafood makes excellent fried rice and sandwiches the next day.

For a standing buffet with non-seafood dishes alongside, reduce fish and prawn quantities by 25%. People eat less when grazing than when seated.

What to Prep the Night Before

Make every sauce the night before: cocktail sauce, garlic aioli, tartare, mignonette. They all improve overnight as the flavours develop. Peel and devein prawns if you're serving them peeled — store covered in the fridge. Wash and dry salad greens; store wrapped in a damp tea towel. Any dry marinades or herb crusts for the fish can go on the night before. Do not apply citrus-based marinades until the morning — acid begins to cook fish protein after a few hours.

Kitchen Setup for Service

One person on the grill or oven, one person on cold assembly and accompaniments. This split is non-negotiable once you're past 8 guests. The grill person watches timing and pulls fish at the right moment. The cold person tops up ice on platters, refills sauces, plates oysters, and manages the flow of food to the table. Two people working in parallel will get food out three times faster than one person doing everything.

For the oven: sheet-pan baked fish is the right format for a crowd. Lay barramundi or salmon fillets on oiled trays, season, bake at 200°C for 14 to 16 minutes. Two large trays hold 12 fillets. Stagger them by 3 minutes if your oven runs unevenly. Pull when just opaque at the thickest point and rest 2 minutes before serving.

Keeping Seafood Cold at an Outdoor Easter Event

April on the Gold Coast means 25 to 28°C AEST. Raw or cooked seafood should never sit at ambient temperature for more than 2 hours, and that window shrinks fast in direct sun. Put 2 to 3 bags of crushed ice under every cold platter and replenish every 45 minutes. Keep the prawns in the fridge and bring them to the platter in batches rather than setting out the full quantity at once. Oysters should come off ice only when they're about to be eaten.

If you're setting up outside, position the seafood table in the shade. A covered outdoor table with a bag of ice under the serving tray and a second bag in reserve is sufficient for a 3-hour event.

Scaling Two Key Recipes

For garlic prawns: 500g of peeled prawns with 2 crushed garlic cloves and 40g of butter serves 4. Scale directly — for 12 people, use 1.5 kg of prawns, 6 cloves, and 120g of butter. Cook in 2 to 3 batches over very high heat. An overcrowded pan steams instead of sears, and garlic prawns without colour are garlic poached prawns.

For beer-battered fish: 12 fillets requires 3 cups of plain flour, 3 cups of cold lager, 1.5 teaspoons of baking powder, and salt. Fry in batches of 3 to 4 at 175°C. Keep finished pieces on a wire rack in a 120°C oven — never stacked, or the batter softens.

Tasman Star for Large Groups

For Easter groups of 15 or more, contact Tasman Star Seafood at Labrador (5–7 Olsen Ave) or Varsity Lakes (20 Casua Dr) to discuss quantities and preparation. We can peel and devein prawns, pre-shuck oysters, and portion fish fillets ready for the oven. Browse our range online or call ahead to confirm your order by Wednesday for Good Friday availability.