Ever wonder how cupcake decorators achieve those effortless rainbow buttercream swirls atop their cupcakes? Rolled Buttercream makes piping with multiple colors so much easier! This method keeps your colors separated while piping and allows for any combination of hues. For 3-4 colors, you can either pipe two lines of each color or one of each color, repeating as needed. This ensures there's enough frosting when rolling it up and maintains a sufficient size for your piping bag.