
Preheat the barbecue to 350°F (180°C).
Mix melted butter with mustard and leeks.
Wash potatoes. Finely slice without slicing it all the way to keep potatoes into one piece.
Stuff leeks butter between each potato slice and cover individually into aluminum paper. Bake in the barbecue for 30 to 45 minutes.

1 package of sliced leeks contains the equivalent of 2 whole leeks.
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