These cupcakes taste like those sticky purple fingers from drinking Grape Crush straight from the can. The kind you'd sneak into the movies in your backpack. I made these for my nephew's birthday and the whole kitchen smelled like grape soda and nostalgia. The batter's got that electric purple color that makes everyone stop and go 'wait what IS that?' before they realize it's just childhood in cupcake form. They're sweet and tangy and honestly a bit of a mess to make, but that's half the fun.
Okay so the grape soda is NON-negotiable here — don't try to swap for juice, it won't work. I tried once and ended up with sad lavender cupcakes. Also, the batter will look like a science experiment gone wrong, that's normal. Let them cool completely before frosting or you'll have purple soup. I learned that the hard way. And yes, the frosting is supposed to taste like melted ice cream. Don't you dare use diet soda, I'm watching you.