Preheat the oven to 325°F.
In a bowl, whisk together the flour, salt, baking soda, baking powder, cinnamon, cloves, nutmeg, and ginger.
In a separate bowl, using a hand mixer or whisk, beat the butter and sugar until well combined. Whisk in the egg until completely smooth. Stir in the pumpkin.
Whisk the flour mixture into the wet ingredients about ¼ cup at a time, until just combined.
Pour the batter into a greased loaf pan. Bake for 1 hour 10 minutes to 1 hour 25 minutes, or until a knife inserted into the center comes out clean.
When the bread is finished baking, allow it to cool in the pan for about 15 minutes before removing to a wire rack. Allow to cool completely, about 2 hours, before glazing.
When the bread is cool, drizzle the espresso glaze over the top until covered.
Allow the glaze to set at least 30 minutes. Slice and serve.