Ingredients

  • 2 cups All purpose flour
  • 1 3/4 cups Granulated sugar
  • 1 1/2 teaspoons Kosher salt
  • 1/2 teaspoon Baking soda
  • 1/2 teaspoon Baking powder
  • 1 cup Extra-virgin olive oil
  • 1/3 cup Sour cream
  • 1 3/4 cups Whole milk
  • 3 Large eggs
  • 2 tablespoons Grapefruit zest
  • 1/4 cup Fresh grapefruit juice
  • 1/4 cup Dark rum

Method

  • Preheat oven to 350 degrees. Grease and flour a 9-inch cake pan, set aside. (Can alternatively use a deep dish pie pan.)
  • In a medium sized mixing bowl, whisk or sift together flour, sugar, salt, baking soda, and baking powder.
  • In another large mixing bowl combine oil, sour cream, milk, eggs, grapefruit zest and juice, and rum. Whisk together until thoroughly combined.
  • Dump dry mixture into wet mixture and stir until just combined. (Some lumps are okay!)
  • Pour batter into prepared pan and bake for 1 hour and 10 minutes, or until golden on top and a cake tester comes out completely clean.
  • Remove cake from oven and let cool for 30 minutes in it's pan. After 30 minutes, run a knife around the edge of the pan and invert cake onto cooling rack. Let cool completely.