This rosy riff on a strawberry shortcake is sure to become a new Bundt cake classic. Egg whites and cake flour create a stark white batter (and super tender crumb) that is a perfect canvas for tinting. For the pink part, flavor a third of the batter with ground freeze-dried strawberries. Alternate pouring in the two batters; then swoosh a knife through a few times to swirl. To serve, fill the center of the cake with whipped cream and macerated berries and prepare to impress.