Anyone else remember the little filled-in-donut shortcakes they sold in American grocery stories, stacked amid clamshells of summer strawberries and spray cans of whipped cream? Thinking back, I don’t think they were actually angel food cake, but I always sort of thought they were, and a personal angel food cake blew my mind. Angel food cake has always been a favorite. But a favorite in the sense that I’ve only actually eaten it a handful of times and always considered it too ethereal, hard to make, and special to ever consider having for every birthday, holiday, or weekend. Which, I now realize, was a HUGE mistake. Because I LOVE angel…