If you're a kid and it's your birthday, then there's only one cake you want. And because all of us have been kids (or perhaps have never really grown up), chocolate cake brings out our inner seven year old, and we too hoe into it with gusto. Anyone who likes to bake has a go-to recipe for chocolate cake and this is mine. I'm not a parent but the average person (baker or not) with a lot on their plate can appreciate a recipe where all you have to do is pile the ingredients into a food processor and press ON. Especially when the results would indicate it was a lot more work - the most delicate crumb, a perfect balance of tangy and sweet, and a sturdy structure which allows it to be comfortably held by fingers big and small.
It's so good in fact, it befits two choruses of happy birthday - one with candles, one with sparklers. The secret is sour cream, which enriches both icing and cake and cuts the sweetness of the sugar in each. It also makes it beautifully moist, which means the slice you get to take home will be just as delicious the next day.