Preheat oven to 325 F. Spray 2 - 9x5-inch loaf pans with non-stick cooking spray.
In a small bowl, combine flour, salt, baking soda, baking powder, cinnamon, nutmeg, ginger, cloves, and both sugasr. Stir and set aside.
In a mixing bowl, combine the canola oil, butter, pumpkin puree, eggs, water, and yogurt. Blend until combined.
With a stand mixer or hand mixer on low, slowly add the dry ingredients into the wet ingredients. Scrape the sides often to make sure all the ingredients get blended in. When theyre combined, mix on medium for two minutes until the mixture is light and fluffy. Fold in the white chocolate chips.
Divide the batter evenly amongst the 2 loaf pans.
Bake for 55 to 60 minutes, or until toothpick comes out clean in the middle. Let cool slightly before serving.
Serve White Chocolate Pumpkin Bread warm with butter, or chilled.