Grilled salmon in foil, 4 port

Recipe on Grilled salmon in foil, 4 port
Ingredients recipe
4 x 170 g salmon file
4 slices lemon
1 red onion
2 carrots
600 g potatoes
200 g butter
salt
Sauce
2 tbsp whitefish roe or rome
1 tbsp champagne
2 tsp lemon juice
1 / 2 dl Creme fresh
salt
Do this
Pre-cooked potatoes 18-20 min it will be a little hard in the middle. Then add in all ingredients for sauce in a bowl and stir so it is ready let it be 1 hours in the refrigerator for better taste. Then sliced carrots and onion and put it in foil with all the rest and add 50 g of butter in each package. grill for about 10-15 min.