kue pelangi

Bahan-bahan (12 porsi)

• 3 ⅓ cup tepung kue
• 2 ¼ cup gula pasir
• 2 ¼ teaspoon baking powder
• ¾ teaspoon soda kue
• 1 ½ cup dadih
• ⅓ cup susu
• 3 teaspoons ekstrak vanila
• ¾ cup minyak sayur
• 6 egg whites (room temperature)
• Pewarna makanan
• 2 pounds unsalted butter (room temperature)
• 16 cups gula bubuk
• 2 tablespoons ekstrak vanila
• 1 pinch salt
• 1/3 cup heavy cream (more if needed)
• Pewarna makanan