Rainbow Mirror Cake

Ingredients

• 1 cup unsalted butter (room temperature)
• 2 cups sugar
• 2 tsp vanilla extract
• 4 eggs
• 4 cups all-purpose flour
• 7 tsp baking powder
• 2 cups milk
• 1 tsp salt
• food colouring
• 2 cups unsalted butter (room temperature)
• 1 tsp vanilla extract
• 5 cups confectioner’s sugar
• 3 tbsp powdered gelatin
• ½ cup + 1 tbsp water
• 1 cup glucose
• 2/3 cup water
• 1 ½ cups granulated sugar
• 2 cups white candy melts (roughly chopped)
• 2/3 cup condensed milk
• 1 tbsp white food colouring
• rainbow food colouring