Whisk together the all-purpose flour, baking soda, baking powder, spices, and salt in a medium bowl. Set aside. 190 g all-purpose flour, 1 ½ teaspoons ground cinnamon, 1/4 tsp ground nutmeg, 1/8 tsp ground cloves, 3/4 teaspoon salt, 1 teaspoon baking soda, ¼ teaspoon baking powder
In a large mixing bowl, add pumpkin puree, oil, sourdough discard, brown and white sugar, milk, eggs and vanilla. Whisk until well combined. 226 g pumpkin puree, 105 g vegetable oil, 100 g sourdough discard starter, 100 g granulated sugar, 100 g soft brown sugar, 60 g whole milk, 2 large eggs, 1 teaspoon vanilla paste
Add the dry ingredients to the wet ingredients in the large bowl. Fold until combined. The muffins can be baked right away or cold-fermented overnight.