Cut the cucumber in half and deseed it, then chop it into 1cm chunks
Slice the spring onions and radishes, then combine all the salad ingredients in a bowl.
To make the vinegarette, combine all the ingredients in a jar. Seal the jar with a lid, then shake until the ingredients are well mixed and pour over the salad.
Toss before serving.
Recipe by The Luminous Kitchen at https://theluminouskitchen.com/whole-baked-fish/