Magic easter mousse cake

Ingredients

• Magic Easter Mousse Cake
• 3 cups caster sugar
• 1 1/4 cup water
• 375 grams butter, chopped
• 300 grams milk chocolate, chopped, plus 100g extra, melted
• 1 1/2 tablespoon instant coffee
• 1 teaspoon vanilla extract
• 3 eggs, lightly beaten
• 2 1/4 cup self-raising flour
• 3/4 cup plain flour
• 1/3 cup cocoa
• 1/3 cup thickened cream
• 200 grams dark chocolate, finely chopped
• 1 bendy drinking straw
• 250 grams mini Easter eggs
• 8 Ferrero Rochers, unwrapped
• 1 small party lolly bag
• 2 long bamboo skewers
• MOUSSE
• 300 grams white chocolate, chopped
• 1 1/2 cup thickened cream
• 2 teaspoons powdered gelatine
• 4 eggs, separated