Soak the salt cod in water for 2 hours. Then drain it and gently squeeze out some of the water that is still inside. Don’t wring the fish out, the water that is left will be part of the sauce in the papillote once cooked.
Soak the dried mushrooms for 30 minutes in half a cup (120 ml) of water as well.
Brush and clean the mushrooms. Then chop them into 4 pieces. Peel and slice the garlic clove. Add some olive oil to a medium non-stick pan. Place it over medium heat until hot and add the garlic.
Gently fry the garlic for 2 minutes, don’t let it burn. Then add the chopped white mushrooms. Season with a pinch of pepper.
Stir and fry the mushrooms for 4 to 5 minutes. Add a few extra drops of olive oil if necessary but don’t exaggerate. Remove the dried mushrooms from the soaking liquid: don’t throw the liquid away, we’ll need it in a bit. Gently squeeze the soaked mushrooms to remove some excess water and add them to the white mushrooms in the pan.
Stir the mushrooms well and let them bake for another 3 to 4 minutes. Then take the pan off the heat, stir in the freshly chopped parsley and let the mushrooms cool a little.
Place a drained salt cod steak a large piece of baking or parchment paper on a deep plate and place one cod steak on in.
Then add half of the baked mushrooms.
Drizzle with 5 tablespoons of the soaking liquid from the mushrooms.
Fold the upper part of the paper over the fish.
Then fold the upper left corner, make a triangle.
Repeat with more golden triangles and work your way around the fish and mushrooms. Cut off any excess paper if that makes it easier for you to fold.
Don’t make the parcel too tight or too loose.
Keep going until you reach the other side of the parcel. Make sure the last triangle is closed tightly or the hot air will disappear through it while cooking.
Now repeat this and wrap up the other cod steak. Then place both parcels on a large baking tray and place them in a preheated oven at 480°F (250°C) for 20 minutes. Then remove the parcels and place them onto deep plates. With a pair of scissors snip a little whole in the paper (careful, the air inside is hot) and cut a cross in the paper to expose the cooked fish and mushrooms. Serve hot.