Heat the Stork Margarine in a large frying pan. Add the onion and garlic and cook on medium heat for 4-6 minutes, until the onions softened but do not brown. Add the seafood shells and cook for about 15 minutes, until soft but not brown.
Add the water and the Knorr Vegetable Stock Pot. Bring to the boil and simmer gently for 10-12 minutes. Strain through a fine sieve into another saucepan.
Add the tomatoes, bring back to the boil and simmer for 8-10 minutes.
Stir in the cream, mayonnaise and milk and
bring to the boil, Reduce heat and simmer for 10-15 minutes or until bisque starts to thickened and the colour deepens. Serve topped with chopped parsley and some freshly cooked langoustine tails or freshly cooked king prawns.