This recipe calls for vanilla sugar, which is simply granulated sugar infused with vanilla beans. You can typically find it in the baking aisle, but if not, you can also purchase vanilla sugar online. If needed, you can substitute the vanilla sugar at a 1:1 ratio with regular granulated sugar.
To achieve that lovely creamsicle color in your frosting, you'll need to use orange paste food coloring. Simply stick a toothpick into the food coloring, and what comes out is all you will need! You can omit the food paste coloring altogether if desired; it's entirely just for aesthetics.