* 1 kg Prawns, cleaned, but with shells left on
* 1 litre water or Fish stock
* 1 stick of Celery, chopped
* 1 small Onion, Diced
* Juice of 1½ Lemons
* Salt and Pepper
* 125 ml Olive oil
* ½ teaspoon Dijon mustard

===Method===
* In a saucepan, place the water, Celery, Onion, the Juice of ½ a Lemon and a pinch of Salt.
* Boil for 10 minutes.
* Add the Prawns and Simmer for a further 10 minutes.
* Meanwhile, to make the dressing, put the Juice of 1 Lemon, seasoning, Olive oil and Mustard into a jar and shake until thoroughly mixed.
* Drain the Prawn mixture and pour the dressing over it whilst still warm.

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