Grilled Salmon Sauce No. 2 with champagne

1/2 lb salmon fillet , about 1-inch inch thick olive oil salt and pepper 2 tablespoons chopped shallots 1/2 cup champagne 1/2 tablespoon Dijon mustard 1/4[...]

1 lb fingerling potato (or other small boiling potatoes) 1/2 teaspoon salt 3/4 cup champagne vinegar 1 tablespoon sugar 1/2 medium red onion , diced 1 cup[...]