Chocolate Lover's Cheesecake

• 1 egg (beaten)
• 260 gr fine crush chocolate wafers
• 120 ml sour cream
• 230 ml cream cheese softened
• 65 gr sugar
• 60 ml milk
• 55 gr semisweet chocolate
• 40 gr margarine
• 30 gr semisweet chocolate o
• 4 gr shortening o