Salmon roulade recipe

Ingredients

• 1 salmon filet, trimmed and split (no skin)
• 1 bunch leeks (white part), julienned and blanched in boiling water
• 1 pound cold butter, cubed
• 1 cup white wine
• 2 Tablespoons pink peppercorns
• 2 Tablespoons chopped fresh herbs
• 4 shallots, sliced
• 1/4 cup white wine vinegar
• 1/4 cup heavy cream
• salt and pepper