This fun cake contains a rainbow of colors. It is vanilla cake base with a vanilla butter-cream frosting. Great for childrens birthday parties.

香草口味蛋糕加香草糖霜，这款有趣的彩虹蛋糕会成为孩子们生日派对上的焦点。

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We picked out a range of flavors, including the "grasshopper" (chocolate cake filled with fudge and topped with mint cream-cheese frosting, cake crumbs, chocolate chips and a buttercream rosette) and the "Elvis" (vanilla cake filled and frosted with banana-cream-cheese icing, with a swirl of peanut butter and peanut-butter chips).

WSJ: Testing Mail-Order Cupcakes