Preheat the oven to 350°F (175°C).
In a mixing bowl, combine all the dry ingredients: flour, cocoa powder, baking soda, and salt.
In another bowl, mix together the wet ingredients: buttermilk, vegetable oil, eggs, and peppermint extract.
Gradually fold the wet mixture into the dry mixture until just combined.
If desired, fold in chocolate chips for extra texture.
Pour the batter into a greased loaf pan and smooth the top.
Sprinkle crushed peppermint candies on top for garnish.
Bake for 50-60 minutes or until a toothpick inserted into the center comes out clean.
Once baked, allow the loaf to cool in the pan for 10 minutes before transferring to a wire rack.
Slice and serve, enjoying the delightful combination of chocolate and peppermint.