Preheat the oven to 180°C/Fan 160°C/Gas 4. Line a large roasting tin with a piece of buttered foil.
Place the salmon in the middle of the foil and season well with salt and freshly ground black pepper. Scatter the sliced fresh root ginger and lemon all around, then fold over the foil and seal to make a parcel. Place in the preheated oven and bake for about 25–30 minutes, until just cooked. The fish should be opaque. Remove from the oven and leave to become cold, keeping the foil parcel sealed.
Thinly slice the mangetout, then blanch in boiling salted water for 2 minutes. Drain and refresh in cold water. Cut the cucumber halves into crescent-shaped slices.
Place the mangetout and cucumber in a large bowl with the other vegetables and half the coriander.
Mix the hoisin dressing ingredients together in a jug. Pour the dressing over the vegetables and mix to combine.
To make the sweet chilli sauce, mix the ingredients together in a small bowl with the remaining coriander.
Carefully transfer the salmon onto a serving platter, discarding the ginger and lemon slices. Arrange a neat line of vegetables along the centre of the fish. Serve the remaining vegetables in a bowl alongside with the sweet chilli sauce.
Mary’s Tips
Salmon can be cooked up to 6 hours ahead, serve on the same day. Dressing and sauce can be made up to 4 days ahead.
Tip the vegetables in the dressing just before serving. If you dress them too early, the vegetables will lose their crispness.
Not suitable for freezing.
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