Heat a frying pan until hot, then add the oil, and stir fry the prawns for 1-2 minutes. Then add the squid and cook for a further 1 minute. Add the crab meat and heat the through.
Remove from the heat and place in a bowl.
Combine all the other ingredients, except the chicory, and pour onto the seafood.
Leave to marinate for 30 minutes.
Drain the seafood and fill the chicory boats. Serve immediately.