Cut 4 squares of silver foil (approx 45cm square) and divide the peppers and spring onions between them. Place the fish on top, followed by 2 sprigs of dill, juice of ¼ lemon, pinch of black pepper and a dash of white wine (or water) on each.
Fold the foil into a sealed parcel, place on a baking sheet and bake in a preheated oven Gas 6, 200°C, fan 180°C for 15 minutes.
Cook the spinach. Divide between 4 plates and season to taste, then sprinkle with the remaining lemon juice, zest and olive oil. Place the salmon and peppers on top. Serve with boiled new potatoes or rice.
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