First make the dressing by combining all ingredients in a small bowl and whisking together. Set aside while you prepare the rest of the ingredients.
Next slice the cucumber in half lengthways and use a tea spoon to scoop out the seeds. Thinly slice the cucumber so that you get nice crescent-shaped pieces. Thinly slice the radish.
Take a large slate or board and place the side of salmon on top one slice at a time, folding each slice to give the whole dish some height. Scatter over the watercress, cucumber and radish before drizzling with the dressing and serving to your guests. Bon appétit!
Our thanks to www.watercress.co.uk for providing this recipe
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