Preheat your oven to 325°F (160°C) and grease a 9x5 inch loaf pan with butter or cooking spray, lining it with parchment paper.

In a medium bowl, sift together 2 cups of all-purpose flour, ¾ cup of Dutch-processed cocoa powder, 1 teaspoon of baking powder, and a pinch of salt. Set this mixture aside.

In a small bowl, dissolve 1 teaspoon of instant coffee or espresso powder into 1 cup of buttermilk.

In a large bowl, cream together 1 cup of softened unsalted butter and 2 cups of granulated sugar until light and fluffy, about 3-5 minutes.

Add 4 large eggs one at a time to the creamed mixture, mixing well after each addition, then add 2 teaspoons of vanilla extract and the buttermilk mixture.

Gradually add the dry ingredients to the wet mixture, mixing on low speed until just combined.

Pour the batter into your prepared loaf pan, smoothing the top and bake for 50-55 minutes, checking doneness with a toothpick.

Allow the cake to cool in the pan for about 15 minutes, then lift it out using the parchment paper and transfer to a wire rack to cool completely.

To prepare the ganache, heat 1 cup of heavy cream until it simmers and pour it over 1 cup of chocolate chips, letting it sit for a minute before whisking until smooth.

Once the cake has cooled, drizzle the ganache over the top, allowing it to flow down the sides.