Red Velvet cake - Trois fois par jour

Ingredients

• 2 1/2 cups all-purpose flour
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• 2 tablespoons cocoa powder
• 1 teaspoon vinegar
• 1/4 cup red food colouring Replacement options or 2 tbsp gel food colouring
• 1/2 cup semi-salted butter, at room temperature
• 1 1/2 cup sugar
• 2 eggs
• 1 teaspoon vanilla extract
• 1 cup buttermilk
• 2 cups cream cheese, at room temperature
• 2 1/2 cups icing sugar (or more, to taste)