Bordelaise Sauce For Game

• 12 cracked peppercorns
• 6 peppercorns (crushed)
• 2 bay leaves
• 1 sprig of thyme
• 1 bacon
• 1 matignon
• 3/8 parsnip
• 1/4 bone marrow
• 1/4 madeira
• 1,900 ml stock