INGREDIENTS
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for the dark chocolate cake: * 1-3/4 c. all-purpose flour, plus more for flouring the pans * 2 c. sugar * 3/4 c. cocoa powder * 2 tsp. baking soda * 1 tsp. baking powder * 1 tsp. kosher salt * 1 c. buttermilk * 1/2 c. vegetable oil * 2 extra-large eg