Mary Bergin's Tiramisu — cookaz

Ingredients

• For the chocolate chiffon cake
• 1 1/2 cup sugar
• 1 cup all-purpose flour
• 3/4 cup cocoa (unsweetened)
• 2 tsp baking powder
• 1 tsp baking soda
• 1/4 tsp salt
• 4 eggs, yolks and whites separated
• 2 egg whites
• 3/4 cup vegetable oil
• 1/2 cup water
• 1 tsp vanilla
• For the mascarpone cream
• 21 oz mascarpone cheese
• 11 1/2 oz milk chocolate (cut in small pieces)
• 8 eggs, whites and yolks separated
• 1/2 cup sugar
• 2 tbsp Kahlua liqueur
• 2 tbsp rum
• For the coffee mixture
• 4 cup Espresso coffee
• 1 1/4 cup water
• 1 cup sugar
• 3 tbsp Kahlua
• 3 tbsp rum
• For garnishing
• Cocoa, unsweetened for garnish
• 1/4 cup milk or dark chocolate (coarsely grated, for garnish)