Heart Attack Cake

• 12 spring-form (pan)
• 10 egg yolks room temperature
• 10 egg whites room temperature
• 2 grand marnier
• 1 powdered sugar
• 5,000 gr sugar
• 500 gr bittersweet dark chocolate
• 250 gr butter (unsalted)
• 250 gr superfine sugar
• 250 gr sugar