Preheat the oven to 350ºF (180°C).
Grease a 10 to 12-inch bundt cake pan (26cm) with 2 tablespoons shortening, making sure every nook, cranny and angle is covered. Dust with flour, shaking off excess. Reserve.
Mix ¾ cup unsweetened cocoa powder with hot (not boiling) ¾ cup prepared coffee in a medium bowl until smooth. Reserve.
Beat ¾ cup unsalted butter in a large bowl for 20 seconds and gradually add 1 cup granulated sugar and ¾ cup brown sugar while you continue beating until very creamy, about 3 minutes.
Add 3 eggs, one at a time, mixing well after each addition. Beat for 1 minute after the last one is added.
Add ½ teaspoon vanilla extract and ¾ cup sour cream to the chocolate mixture and mix to incorporate well.
Add sifted dry ingredients (2 ¼ cups all-purpose flour, 1 ½ teaspoons baking soda, ½ teaspoon baking powder and ½ teaspoon salt) in 3 additions to the butter mixture, alternating with the chocolate mixture in 2 additions. That means you start and end with flour mixture. Don't worry if the batter looks a bit curdled at times. You can sift the flour, baking soda, baking powder, and salt in a separate bowl or have the ingredients measured and sift directly over the cake batter as you add them (like I do).
Pour cake batter into the prepared bundt pan and smooth the top.
Bake for 55-60 minutes or until a cake tester or toothpick comes out clean. The time might vary depending on your oven and pan.
Let cool for a few minutes and carefully remove from the pan onto a wire rack. Make sure the sides and center are loose before doing so.
Cool completely before glazing.
To glaze, set the cold cake on a wire rack that's placed on a large piece of parchment paper. Drizzle the ganache from the top all around the cake and let it drip. You can reuse the drippings by simply collecting them with a spatula and drizzling them over the cake again.