I am entering a cupcake challenge and I see that this is a very popular cake choice. I want to half the recipe. I just need to know what is half of 1 1/2 teaspoon of salt? The other ingredients were obviously easy to half. I also need to know what type of frosting compliments this cake. Does Wilton's buttercream go well with this cake? I am looking to win. Your help is greatly appreciated.