01 - In a large mixing bowl, whisk together the sourdough starter, lukewarm milk, eggs, melted butter, and vanilla extract until smooth and fully incorporated.
02 - In a separate medium bowl, sift together the flour, sugar, salt, baking powder, and baking soda to ensure even distribution.
03 - Add the dry ingredients to the wet mixture, stirring gently with a spatula until just combined. Take care not to overmix to maintain tender texture.
04 - Gently fold in the diced strawberries and white chocolate chips until evenly distributed throughout the batter.
05 - Cover the bowl and let the batter rest at room temperature for 3 to 4 hours, or refrigerate overnight for enhanced flavor development through fermentation.
06 - Preheat the oven to 350°F. Grease a 9x5-inch loaf pan thoroughly and line with parchment paper for easy removal.
07 - Give the rested batter a gentle stir to redistribute ingredients, then scrape into the prepared loaf pan and smooth the top evenly.
08 - Bake for 50 to 60 minutes until a toothpick inserted into the center comes out clean and the top develops a golden-brown crust.
09 - Allow the bread to cool in the pan for 15 minutes, then transfer to a wire rack to cool completely before slicing for clean cuts.