01 - Whisk together sourdough starter, lukewarm milk, eggs, melted butter, and vanilla extract in a large mixing bowl until smooth and fully incorporated.
02 - In a separate medium bowl, sift together flour, sugar, salt, baking powder, and baking soda to ensure even distribution.
03 - Add dry ingredients to wet mixture, stirring gently with a spatula until just combined. Avoid overmixing to prevent tough texture.
04 - Gently fold diced strawberries and white chocolate chips into batter until evenly distributed throughout.
05 - Cover bowl and let rest at room temperature for 3-4 hours, or refrigerate overnight for enhanced fermentation and deeper flavor development.
06 - Preheat oven to 350°F. Grease a 9x5-inch loaf pan and line with parchment paper for easy removal.
07 - Stir batter gently to redistribute ingredients, then scrape into prepared loaf pan and smooth top with spatula.
08 - Bake for 50-60 minutes until toothpick inserted into center comes out clean and top is golden brown.
09 - Cool in pan for 15 minutes, then transfer to wire rack to cool completely before slicing into 10 servings.