01 - Whisk together sourdough starter, lukewarm milk, eggs, melted butter, and vanilla extract in a large mixing bowl until smooth and fully incorporated.
02 - Combine flour, granulated sugar, salt, baking powder, and baking soda in a separate bowl, ensuring even distribution of leavening agents.
03 - Add dry ingredients to wet mixture, stirring gently until just combined. Avoid overmixing to prevent tough texture in final bread.
04 - Gently fold diced strawberries and white chocolate chips into batter, distributing evenly while maintaining airiness of mixture.
05 - Cover bowl and let batter rest at room temperature for 3-4 hours, or refrigerate overnight for enhanced flavor development through fermentation.
06 - Preheat oven to 350°F. Grease and line a 9x5-inch loaf pan with parchment paper for easy removal after baking.
07 - Stir rested batter gently to redistribute ingredients, scrape into prepared loaf pan, and smooth top evenly with spatula.
08 - Bake for 50-60 minutes until golden brown on top and toothpick inserted into center comes out clean, indicating complete doneness.
09 - Allow bread to cool in pan for 15 minutes before transferring to wire rack. Cool completely before slicing for clean, even cuts.