Preheat your oven to 350 degrees Fahrenheit. Then, grease and dust your two 9-inch Bundt cake pans. After that, set aside.
1 1/2 cups of cake flour plus extra for dusting
Afterward, mix your softened butter and sugar in a mixing bowl using an electric mixer. Please make sure you attach it with a paddle attachment. Then, mix at low speed until blended. Next, set the speed to medium-low. And ensure to beat for a minute. Or do so until the mixture is smooth. Afterward, scrape the bowl's sides to combine properly.
One stick of softened unsalted butter, about eight tablespoons plus extra for greasing, 1 1/2 cups of sugar
After that, mix your espresso powder and water in a small bowl. Then, add your espresso mixture while the electric mixer is still mixing. Afterward, add your eggs one at a time. Next, add the next egg if the previous egg combines into your mixture. Also, you may stop occasionally beating to scrape the bowl's sides using a rubber spatula.
1 tbsp. of instant espresso powder, 1/2 cup of hot water, 4 pcs extra-large eggs, at room temperature
Then, once you add all your eggs, continue to beat for another minute to ensure your eggs mix thoroughly.
4 pcs extra-large eggs, at room temperature
Next, add your cocoa powder, baking soda, salt, and baking powder to a different mixing bowl.
1/2 cup of black cocoa powder, 1 tsp. of baking soda, 1 tsp. of kosher salt, 1/4 tsp. of baking powder
While the electric mixer is still mixing, add half of your buttermilk and black food coloring. Then, stop and scrape the bowl's sides and bottom. Also, add half of your dry ingredients and mix. Afterward, add the other half of your buttermilk and the remaining dry ingredients. In addition to that, mix the ingredients until well combined. Keep in mind to avoid over mixing.
1/2 cup of buttermilk, 1 tsp. of black food coloring
Afterward, pour your cake batter into your prepared Bundt cake pans. Then, bake Bundt cake for about 25 to 30 minutes. Or bake until your cakes start to pull from the sides of your pan. And they are springy to touch.
After that, remove your cakes from the oven. And allow them to cool for 10 minutes before turning them over to your serving plates.
Then, put your heavy cream into a small saucepan over high heat. And allow it to boil to make the ganache. After that, combine your chocolate and raspberry puree. In addition to that, mix your food coloring into a large glass bowl. When your cream reaches a boil, pour it over your chocolate mixture. And allow the hot cream to melt your chocolate. Also, stir to combine.
1 1/2 cups of heavy cream, 3 cups of chopped white chocolate, 1/4 cup of raspberry puree, 1 tbsp. of red food coloring
Finally, put your berries in the center of your cake. And pour your warm ganache into the center of your Bundt cake as well as over the edges. As always, serve and enjoy!
1/4 cup of fresh raspberries for garnish