Preheat your oven to 350°F (175°C). Grease a 12-inch round cake pan and line the bottom with parchment paper.
In a large mixing bowl, beat the eggs and sugar with an electric mixer, or stand mixer fitted with the paddle attachment, until pale and creamy, about 1 minute.
4 eggs, 2 cups sugar
Mix in the oil, milk, orange juice, brandy, vanilla extract, and zests.
1 cup canola oil, ¾ cup whole milk, ¾ cup orange juice, ¼ cup brandy or cognac, 1 tbsp vanilla extract, Zest from 1 orange and 1 lemon
In a separate bowl, sift together the flour, baking powder, and salt. Add the dry ingredients to the wet mixture, beating until well combined.
3 ½ cups all-purpose flour, 3 tsp baking powder, 1 tsp salt
Pour the batter into the prepared cake pan.
Bake for about 50-60 minutes, or until a toothpick inserted into the center of the cake comes out clean.
Once the cake is baked, remove it from the oven and let it cool in the pan for about 10-15 minutes. Then, carefully transfer the cake onto a wire rack to cool completely (make sure the cake is cooling rightside up and not upside down).
When the cake is cool, use a sharp knife to cut a slit (somewhere near the edge of the cake) and insert the coil. Dust the top generously with powdered sugar. You can create a stencil design (like the year) if desired, by cutting out numbers from paper, placing them on the cake, and then removing them after dusting the sugar.
Powdered sugar for topping, 1 larger coin wrapped in aluminum foil