Langoustine

40 g1 whole langoustine (about 40 g)

Typical whole langoustine about 40 g.

Instead of Langoustine

Nothing matches langoustine's sweet, soft shellfish texture exactly; large prawn is the closest.

Large prawn
Use the same weight, peeled and deveined; cook 2-3 minutes less so they stay sweet and tender.
Tiger prawn
Use the same weight; meatier but similar, and they need the same quick cooking.
Crayfish tail
Use the same weight; smaller, so cook 1-2 minutes only and add near the end.