Preheat oven to 350°F (180°C). Butter an 8x4-inch loaf pan.

In a large bowl, whisk together milk, sour cream, melted butter, and egg. Add flour and all remaining ingredients, stirring just until dry ingredients are combined. Spoon batter into prepared pan.

Bake until a wooden pick inserted in center comes out clean, 1 hour and 30 minutes to 1 hour and 40 minutes. Let cool in pan for 10 minutes. Serve warm or at room temperature.