Pumpkin Cinnamon Rolls

In a large saucepan, combine 1 1/2 cups whole milk, 1/2 vegetable oil, and 1/2 cup sugar. Heat until hot but not boiling, then remove the pan from the stove and allow it to cool until the mixture is warm to the touch but not too hot. Sprinkle the yeast over the surface of the liquid and allow to sit for 5 minutes. Stir in pumpkin puree until combined. Combine 4 cups of flour with 1/2 teaspoon cinnamon, 1/4 teaspoon nutmeg, and 1/4 teaspoon ginger. Sprinkle it into the saucepan and stir until it just comes together. Cover the saucepan with a dish towel and set in a warm, draft-free place for 1 hour. After 1 hour, the mixture should be very puffy and at least doubled in size. Stir in 1/2 cup flour, baking soda, baking powder, and salt until totally combined.