Preheat oven to 350° F. In a large bowl, whisk together flour, sugar, cocoa, baking powder and salt. Form a well in center and set aside.
In a medium bowl, combine egg, coffee, milk and olive oil. Pour into flour mixture and stir just until moist and combined. Fold in dark chocolate chips.
Pour batter into a greased 8x4x3-inch loaf pan. Bake 55-60 minutes or until toothpick inserted in center comes out clean. Cool on a wire rack for 15 minutes, remove from pan and slice. Store leftovers in a sealed container in fridge.