Preheat your oven to 325°F (160°C). Grease a 10-inch (25-cm) tube pan with butter and lightly dust it with flour. Set it aside.
In a medium-sized bowl, whisk together the flour, salt, and baking powder. Set this mixture aside.
In a large bowl, beat together the butter and sugar until the mixture becomes light and fluffy.
Add the eggs one by one, ensuring thorough mixing after each addition.
Incorporate the Hennessy cognac, milk, and vanilla extract into the mixture. Stir until well combined.
Gradually add the dry ingredients from step 2 to the wet mixture, stirring until just combined.
Pour the batter into the prepared pan, smoothing the top with a spatula.
Bake for approximately 1 hour and 30 minutes, or until a toothpick inserted into the center of the cake emerges clean.
Once baked, remove the cake from the oven and allow it to cool inside the pan for 10 minutes.
Carefully invert the cake onto a wire rack and allow it to cool completely.
To serve, enjoy the Hennessy pound cake as is or with whipped cream or fresh berries, if desired.
Relish your delightful Hennessy pound cake!