📖 Instructions

1. Step 1: Make the Tangzhong - In a small saucepan, whisk together 2 tablespoons (18g) bread flour and 1/2 cup (120ml) milk until smooth. Cook over medium-low heat, stirring constantly with a whisk, until the mixture thickens to a paste-like consistency, resembling wallpaper paste. This usually takes about 3-5 minutes. The temperature should reach 65°C (149°F). Remove from heat and transfer the tangzhong to a small bowl. Cover it with plastic wrap pressed directly onto the surface to prevent a skin from forming. Let it cool completely to room temperature (about 1-2 hours) before proceeding. It's crucial this is cool; hot tangzhong will kill your yeast!
2. Step 2: Activate the Yeast - In the bowl of a stand mixer (or a large mixing bowl if kneading by hand), combine 1/2 cup (120ml) warm milk (around 40-45°C or 105-115°F) with 2 teaspoons (6g) active dry yeast and 1 tablespoon (12g) granulated sugar. Give it a gentle stir and let it sit for 5-10 minutes until it becomes foamy, indicating the yeast is active. If it doesn't foam, your yeast might be old, or your milk too hot/cold, and you should start over.
3. Step 3: Combine Wet and Dry Ingredients - To the yeast mixture, add the cooled tangzhong, 1 large egg, and the remaining 1/4 cup (50g) granulated sugar. Mix briefly to combine. In a separate bowl, whisk together 2 cups (240g) bread flour and 1 teaspoon (6g) salt. Gradually add the dry ingredients to the wet ingredients, mixing on low speed with the dough hook attachment until a shaggy dough forms.
4. Step 4: Knead the Dough - Increase the mixer speed to medium-low and knead for about 10-15 minutes, or until the dough becomes smooth and elastic. It should pull away from the sides of the bowl. At this point, gradually add 2 tablespoons (28g) unsalted butter, softened, one tablespoon at a time, allowing each addition to fully incorporate before adding the next. Continue kneading for another 10-15 minutes until the dough is very smooth, elastic, and passes the 'windowpane test.' (To check: pull a small piece of dough and gently stretch it; it should become thin enough to see light through without tearing.) This step is vital for that signature fluffiness!
5. Step 5: First Rise (Bulk Fermentation) - Lightly grease a clean large bowl with a tiny bit of neutral oil. Place the kneaded dough in the bowl, turning it once to coat. Cover the bowl tightly with plastic wrap or a damp kitchen towel. Let it rise in a warm, draft-free place for 1 to 1.5 hours, or until it has doubled in size.
6. Step 6: Divide and Shape the Dough - Gently punch down the risen dough to release the air. Transfer it to a lightly floured surface. Divide the dough into three equal pieces (you can use a kitchen scale for precision). Roll each piece into a smooth ball. Cover the dough balls with a kitchen towel and let them rest for 10-15 minutes. This resting period helps relax the gluten, making the dough easier to roll.
7. Step 7: Form the Loaves - Take one dough ball. Using a rolling pin, roll it into an oval shape, about 8-9 inches long and 4-5 inches wide. Fold the top third of the oval down to the center, and then fold the bottom third up, overlapping the first fold. Gently flatten the dough. Now, roll this folded dough into a long, thin log, starting from one of the shorter ends. Pinch the seam closed securely. Repeat with the remaining two dough balls.
8. Step 8: Second Rise (Proofing in Pan) - Arrange the three shaped logs seam-side down in a lightly greased 9x5-inch loaf pan. Cover the loaf pan loosely with plastic wrap or a damp kitchen towel. Let it rise in a warm, draft-free place for 45-60 minutes, or until the dough has risen about 1 inch above the rim of the pan and looks visibly puffy.
9. Step 9: Preheat Oven and Egg Wash - While the bread is on its second rise, preheat your oven to 190°C (375°F). In a small bowl, whisk together 1 large egg and 1 tablespoon of milk to create an egg wash. Once the dough has finished its second rise, gently brush the top of the bread with the egg wash. This will give it a beautiful golden-brown crust.
10. Step 10: Bake the Bread - Bake the milk bread in the preheated oven for 25-30 minutes, or until the top is deeply golden brown and an instant-read thermometer inserted into the center reads 93-96°C (200-205°F). If the top starts to brown too quickly, you can loosely tent it with aluminum foil.
11. Step 11: Cool and Serve - Once baked, remove the loaf pan from the oven and immediately turn the bread out onto a wire cooling rack. Allow it to cool completely before slicing (this is tough, I know!). Slicing it while hot can make the interior gummy. Trust me, the wait is worth it for that perfect texture! Once cool, slice and enjoy your wonderfully fluffy Japanese milk bread. It's delicious on it's own, toasted, or with your favorite spreads.