Preheat the oven to 350ºF. Coat a 9x5 inch loaf pan with cooking spray and set aside.
In a large bowl, whisk together flour, salt, baking soda, ginger, cinnamon and nutmeg.
In a medium bowl, whisk together pumpkin, melted butter, brown sugar, molasses, eggs, and milk.
Pour the wet ingredients into the dry and stir with a wooden spoon or rubber scraper until just incorporated.
Pour the batter into the prepared pan. Bake 40 minutes, remove from the oven and sprinkle with Turbinado sugar. Return to the oven and bake another 10-20 minutes or until a toothpick inserted in the center of the loaf comes out clean. Remove from the oven and let cool ten minutes before inverting the loaf and allowing it to cool completely on a rack.