Fault line cake (sugar-free)

• 200 g liquid margarine, which is margarine that comes in a squeezy bottle (e.g. from Solo, Becel, etc.)
• 4 eggs
• 200 ml buttermilk
• 2 tsp vanilla extract
• 250 g Zùsto
• 400 g self-raising flour
• 100 g almond flour
• a pinch of salt
• 1.5 tsp apple cider vinegar
• 1 tsp baking powder
• 200 g egg whites (6 to 7 eggs)
• 250 g Zùsto
• 600 g butter at room temperature! Make sure the butter has been left out of the refrigerator for at least 2 hours.
• 150 g white chocolate
• jar of sprinkles of your choice
• rolfondant, if you want to add a rainbow; this needs to be done at least a day in advance.
• edible paint

Equipment

• Baking paper
• Piping bag
• Turntable to decorate your cake
• 2 round cake tins of 15 cm diameter
• 2 bowls – for the bain marie
• Different mixing bowls