01 - Whisk together the sourdough starter, lukewarm milk, eggs, melted butter, and vanilla extract in a large mixing bowl until completely smooth and 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 rest at room temperature for 3–4 hours, or refrigerate overnight to allow proper fermentation and flavor development.
06 - Preheat 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, then transfer to the prepared loaf pan, smoothing the top evenly with a spatula.
08 - Bake for 50–60 minutes until a toothpick inserted into the center comes out clean and the top is deep golden brown.
09 - Allow to cool in the pan for 15 minutes, then carefully transfer to a wire rack to cool completely before slicing.