In a separate bowl, combine the remaining ingredients with the sifted mixture. Beat until fluffy for 10 minutes, then let it rest for 30 minutes. Divide the batter into three bowls, each with a different color. Add just 1 drop of flavoring and mix well.

Place the molds and cupcake liners in the steamer, ensuring they are spaced apart to allow steam to circulate. Leave a small gap at the top of each cupcake. Use less batter to prevent cracking. Position them directly over the steam holes for a smooth surface. Cover the lid with a cloth to prevent water from dripping onto the cupcakes. Steam for 10 minutes without opening the lid. Once done, remove from the molds and let cool before serving.