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["Preheat oven to 350 F. Butter a 9"" round cake pan. If using a pan that is only 1-1/2"" deep (mine was, and I only have one), butter an additional small loaf pan. Cut a piece of parchment paper to line the bottom. Skip the parchment at your own risk! I did, and this is what caused the cake to split coming out of the pan....", "Zest one medium orange into a large bowl. Use this orange for some of the juice needed later. Add sugar to bowl and mix with your hands to combine and release the citrus oils. The sugar will turn orange. To this bowl, add both flours, salt, baking soda and powder, and whisk to combine.", "In another large bowl, whisk eggs, olive oil, milk, orange juice, and bourbon (if using). Mix dry ingredients into wet, just until combined. The batter will be quite liquidy.", "Pour batter into pan(s) and bake on the center oven rack for 40-45 minutes if using two pans as I did; one large cake should take about an hour. The cake(s) will be golden on top and a fork will come out clean when done, though it will look and feel like it's not quite set.", "Transfer the cake(s) to a rack and let cool. Loosen the sides with a spatula and carefully(!) turn out onto the rack. Remove parchment paper and let cake cool completely."]
