Olive Oil Cake - Lidia

Ingredients

• 1/2 cup olive oil, plus more for the cake pan
• 1 1/4 cup all purpose flour, plus more for the cake pan
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• Pinch salt
• 2 large eggs, plus 4 large egg whites
• 1 cup sugar, plus more for sprinkling
• Grated zest of 1 lemon
• Grated zest of 1 small orange
• 1 teaspoon pure vanilla extract