Preheat oven to 350° Fahrenheit (176° Celsius).
In a large mixing bowl, combine dry ingredients: flour, brown sugar, baking powder, baking soda, salt, ground cinnamon, nutmeg, ginger, and cloves.
In a smaller mixing bowl, combine wet ingredients: sourdough starter, milk, vanilla extract, and egg.
Stir the wet ingredients into the dry until just moistened.
Fold in the carrots and pecans.
Pour batter into lightly greased 9-inch by 5-inch bread pan.
Bake for 55 to 60 minutes. Internal temperature should read between 195° and 200° Fahrenheit (90° and 93° Celsius).
Let bread cool in pan on a wire cooling rack for 10 to 15 minutes. Use a butter knife to loosen the sides from the pan, and turn out on wire cooling rack to finish cooling.
Drizzle with Cream Cheese Frosting and enjoy.