Sourdough Wonder Bread Copycat Recipe

Make the stiff sweet starter: In a small jar, mix 15 g sourdough starter, 15 g honey, 30 g water, and 60 g bread flour until it forms a ball. Knead outside of the jar to fully incorporate the ingredients. Cover loosely and let ferment at room temperature until morning.

Make the tangzhong: Mix 35 g bread flour and 175 g whole milk in a microwave-safe bowl. Microwave in 30-second intervals, stirring between each, until thickened and reaches 150°F (65°C). For me, it usually takes 3-5 rounds to finish. Cover and refrigerate until morning.

Mix the dough: In stand mixer bowl, combine All of the stiff sweet starter, All of the tangzhong, 225 g cold water, 75 g honey, 25 g avocado oil, 575 g high-protein bread flour, and 12 g salt. Mix on speed 1 (lowest speed) for 1-2 minutes until ingredients come together, then increase to speed 2 (a tiny bit faster) and mix for 10-15 minutes, or until dough reaches a weak windowpane. It takes about 10 minutes in a Bosch and upwards of 30 minutes in a KitchenAid, for reference.The dough will feel slightly sticky or tacky after mixing, but it should hold its shape. If the dough doesn't fully come together after a few minutes in the stand mixer, add additional flour in 1 tbsp increments.

Bulk fermentation: Transfer to lightly oiled bowl, cover, and let rise on counter until evening (8-12 hours). At the end of bulk fermentation, the dough should have risen by about 40%, have lots of bubbles, and should be puffy when you tap the surface. (My BF took 11 hours; my home was 73°F/23°C and my dough was 75°F/24°C.) Once it reaches this point, put the bowl in the refrigerator until bedtime to slow down fermentation.

Shape the dough: If not using a nonstick bread pan, lightly oil it. Bring dough out of the fridge and turn it onto work surface (use a light dusting of flour to prevent sticking, if needed). Using a rolling pin, roll dough into rectangle slightly narrower than pan width (about 10" wide by 14" long).

Roll up the dough tightly, pinch the seams on each end, and place your dough log seam-side down in bread pan.

Second rise: Cover and let rise on the counter, overnight, until very puffy and the dough is even with the height of the pan rim (approximately 8-12 hours). (My dough was ready after 11.5 hours in a 73°F/23°C environment.)Note: If your home is warmer than about 75°F (24°C), the dough will likely overproof by morning. I advise putting it in the fridge overnight and resuming with the second rise in the morning.

Bake: Preheat oven to 350°F (175°C). Bake uncovered 40-45 minutes until internal temperature reaches 200-205°F (93-96°C). If the top of the loaf is getting too dark, cover with foil. Once done, immediately brush hot loaf with 1 tbsp butter. Cool in pan 5-10 minutes, then turn out onto rack. Cool completely before slicing (1-2 hours).