With the exception of fresh slices soaked in Grand Marnier, that my mother would serve at dinner parties and I would covet as leftovers, orange flavored desserts were never my favorite. Greek orange cake, featured in cookbooks and displayed on bakery shelves, never captured my fancy… until this summer. While on a weekend getaway to the port town of Gytheio, my husband and I relished the hotel’s complementary breakfast buffet. The kitchen served a handful of traditional Greek dishes, in addition to the standard fare, which is how I took my first bite of Greek orange cake, known as “portokalopita”.…