Quark Cream Torte with Mandarins

This torte should really be called Aunt Käthi’s Velvet Cheese Torte. The filling has a smooth, luxurious, light texture and a taste as refreshing as a summer breeze. It is one of the many creations my Aunt Käthi dreamed up in the small kitchen of the apartment she lived in with my uncle and three cousins. I always enjoyed watching as my aunt worked butter, sugar, eggs, and flour into delicious cakes. Her stove looked like the old-timey wood-fired ovens of m