Preheat oven to 400°F (200°C). Grease a standard 12-cup muffin pan, or line with paper liners.
In a large bowl, whisk together the flour, sugar, brown sugar, baking powder, cinnamon, baking soda, salt, ginger, nutmeg, allspice, and cloves. Make a well in the center.
In a separate bowl, stir together the sour cream, butter, milk, eggs, and vanilla. Add to the well in the flour mixture, and stir just until combined. Stir in the pecans. If you like, save some pecans to top off the muffins.
Divide the batter evenly among the muffin cups, using about 3 tablespoons of batter to fill each about 2/3 full. Sprinkle a pinch of turbinado sugar and a few chopped pecans on top of each muffin.
Bake 12 to 16 minutes, or until a pick inserted into the center comes out clean. Cool the muffins in the pan on a wire rack for about 10 minutes before removing them from the pan to a rack to continue cooling.
Notes
Store in an airtight container at room temperature up to 3 days.