Chop the white chocolate and melt carefully. Brush a chocolate bomb silicone mold and other molds with gold powder and spread the white chocolate on them. Leave to set, chill in the fridge and after removing the molds, brush with gold powder again if necessary.
All components of the cake should be chilled before assembling. Place a cake layer on a cake plate and pipe a buttercream ring on the rim of the cake layer with the Swiss Meringue buttercream. Drizzle some milk on the cake layer. Fill the Namelaka and vanilla mousse into piping bags. Spread a third of the Namelaka on the cake layer, then a third of the vanilla mousse. Finally, spread a third of the chocolate-covered Cornflakes on top. Repeat this process two more times. Finally, place the last cake layer upside down on top of the cake. Wrap the cake in cling film, tightly pull a cake ring around it and chill for 2-3 hours. After chilling, remove the cake ring and cling film and cover the cake with a thin layer of Swiss Meringue buttercream, chill again for 2-3 hours. Finally, cover the cake in the final layer of Swiss Meringue buttercream. For the gold layer on top and the sides of the cake mix together powdered sugar, gold powder and add alcohol until desired consistency is reached. Spread the gold layer on top and sides of the cake and decorate with the gold decorations. Make a small hole in the center of the chocolate bomb half by heating up a spoon, press lightly on the center of the hemisphere so that the chocolate melts, then quickly stick the cross on top and the cake is ready. For the best taste experience, cut and serve the cake at room temperature.