1 Preheat the oven to 350ºF. Set a rack in the middle position of the oven. Brush the bottom and sides of a 9×2 inch cake pan with olive oil.
Line the bottom of the pan with a circle of parchment paper. Brush the parchment with oil.
Generously sprinkle the pan with 2 to 3 tablespoons of sugar, tilting it to coat the bottom and sides, and tap out the excess.
2 Assemble the dry ingredients: In a bowl, whisk together the flour, baking powder, and salt together to combine.
3 Mix the batter: In a separate large bowl, rub the orange and lemon zest into the remaining 1 cup of sugar with your fingers until the sugar is permeated with the zest.
Add the eggs and whisk for about 45 seconds, or until the mixture lightens in color. Stir in the olive oil and sherry, and whisk until smooth.
Add the dry ingredients to the batter and whisk just until smooth.
4 Prepare to bake: Set…