Preheat oven to 400 degrees and line 18 cupcake tins (or Spray cupcake tins)
Whisk together flour, baking soda, baking powder, cinnamon, nutmeg, clove, and salt
Cream together butter and sugar.
Next, add milk, egg and vanilla extract and mix till just combined.
Mix in fed sourdough starter.
Add dry ingredients together and mix.
Divide batter between 18 cupcake tins- about half full
Combine turbinado sugar and teaspoon of cinnamon together and dust over muffins.
Bake 15 to 18 minutes.
Finally, allow to cool on a wire rack. But, you can enjoy while just warm.