Directions

1. Preheat oven to 350. Butter a 9-by-2-inch round cake pan. Line bottom with parchment, and butter the parchment.
2. Whisk together flour, baking powder, salt, and spices in a large bowl. In a medium bowl, whisk eggs, sour cream, molasses, ginger, lemon zest, and vanilla.
3. Beat butter and sugar with a mixer on medium-high speed until fluffy, about 3 minutes. Reduce speed to low. Beat in flour mixture in three additions, alternating with the sour cream mixture.
4. Scrape batter into prepared pan, and bake until golden brown and a toothpick inserted into center comes out clean, 40 to 45 minutes. Let cool in pan on a wire rack for 15 minutes. Turn cake out onto rack, remove parchment, and turn right side up. Let cool completely. (Cake can be wrapped tightly in plastic and refrigerated for up to 1 day.)
5. Spread frosting over top of cake. Drizzle with glaze. Serve immediately.