Butter and flour your bundt pan and preheat the oven to 350 F.
In a small bowl, mix the instant coffee with the cocoa powder and 2 tbsp of organic (or raw) granulated sugar and set it aside.
In a medium bowl, mix together the flour, baking powder, baking soda, and salt and set it aside for the time being.
In the bowl of a stand mixer (or other large mixing bowl if using a hand mixer), mix the butter with the granulated and brown sugar and beat until fluffy with the paddle attachment.
Add the eggs one at a time, mixing well in between.
Add the Bailey's and vanilla extract and mix well.
Alternate adding one third of the flour with one third of the sour cream, mixing well in between each addition until it is all incorporated.
Pour the dry filling mixture into the bowl. Turn the mixer on and off quickly 3 or 4 times. If you are using a hand mixer then use a spatula and create the streaks by using a figure eight pattern once or twice to give you the streaks in the batter. This should give you some streaks of filling in the batter. You don't want to over mix at this point because the filling will just disappear into the batter.
Spoon the batter into the bundt pan and give the pan a light tap on the counter to settle to batter into the pan well.
Bake at 350 F for 40-45 minutes or until a skewer comes out clean when you test the cake. Let the cake cool in the pan for 5 minutes and then turn it out onto a cooling rack.
Let the cake cool completely before topping with the ganache.