preheat oven to 220c/425f/gas7. brush the centre of a large sheet of foil with some of the nelted butter. place the salmon in the centre and bring the edges of the foil around the fish slightly. put the open parcel on to a large baking sheet

mix the tarragon with the rest of the melted butter , plus the wine,lemon juice, salt and pepper. spoon the mixture into cavity of the fish and on top. bring the sides of the foil up over the top of the fish to make a parcel. bake for 30 minutes.

remove the fish from oven and open up parcel. carefully remove skin if you want too.