Stephanie's Pate De Foie

• 6 black peppercorns
• 4 parsley stalks
• 3 chicken bouillon (cubes)
• 1 bay leaf
• 1 lemon
• 525 gr chicken livers
• 475 ml whipping cream
• 375 gr butter (unsalted)
• 350 gr onions
• 240 ml beef stock