Honey Cake with Prunes and Sour Cream

One day, my friend Zosia and I were sauntering around the city of Lviv when it started raining. We found shelter in a buzzy cafe and ordered two coffees and one honey cake to share. I plunged the fork into all seven layers, slathered with glossy sour cream frosting and dried plums, and after the first bite, I asked the waitress for another piece. The cake seemed simple, but those few components merged to release a wave of sour, honey, bittersweet, and delightfully tangy not