Preheat the oven to 180 °C.
Cut out two 30 x 30 cm pieces of parchment paper. Fold in the edges of one piece and place all the ingredients in the middle.
Now put the remaining piece of paper on top and start folding the edges towards the middle to form a closed vessel.
Place on a baking tray and cook in the oven for 10 to 12 minutes. The steam will cook the fish and also infuse it with flavours.
Freeze half and use the other half to make CREAMY FISH-AND-POTATO BAKE:
Preheat the oven to 200 °C.
Place the steamed fish in a baking dish and pour over the cream. Arrange potato slices to cover the fish completely.
Drizzle with olive oil and sprinkle with salt and pepper.
Bake until potatoes are golden and cooked through. Serve with green beans.
TIP: The basic dish is also delicious served with herby brown rice and peas.