Chicken With Port, Cream & Mushrooms

• 1 shallots (minced)
• 240 ml cream (heavy)
• 160 gr mushrooms (fresh)
• 80 ml port wine
• 60 ml cognac
• 22 gr butter
• 16 ml cream
• 14 gr butter all over the skin
• 4 gr cornstarch
• 2 ml lemon juice