Ingredients: For the cake: 2 1/2 cups all-purpose flour 2 teaspoons baking soda 1 teaspoon salt 1/2 cup ginger beer 10 tablespoons unsalted butter 3/4 cup unsweetened cocoa powder 1/2 cup dark rum 2 cups sugar 1/2 cup buttermilk 2 large eggs 1 tablespoon vanilla extract For the glaze: 1/2…