01 - Whisk together the sourdough starter, lukewarm milk, eggs, melted butter, and vanilla extract in a large mixing bowl until smooth and homogeneous.
02 - Sift together the flour, sugar, salt, baking powder, and baking soda in a separate medium bowl to ensure even distribution.
03 - Add the dry ingredients to the wet mixture, folding gently with a spatula until just combined. Avoid overmixing to prevent tough 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 - Stir the rested batter gently, then transfer to the prepared loaf pan, smoothing the top with an offset spatula for even baking.
08 - Bake for 50 to 60 minutes until golden brown and a wooden skewer inserted into the center emerges clean without wet batter.
09 - Allow the loaf to cool in the pan for 15 minutes, then carefully transfer to a wire rack to cool completely before slicing into 10 portions.