Japanese Milk Bread

Make the tangzhong

1. In a small saucepan, whisk together 3 tablespoons bread flour, 1/2 cup milk, and 2 tablespoons water until smooth.
2. Set the pan over medium heat and cook, whisking constantly, until it thickens into a smooth paste, about 1 to 2 minutes. It should leave lines on the bottom of the pan when you whisk.
3. Scrape tangzhong into a bowl and let it cool to lukewarm, about 10 minutes.

   

Mix and knead the dough

1. In the bowl of a stand mixer (or a large bowl), combine 2 1/2 cups bread flour, sugar, salt, and yeast.
2. Add the cooled tangzhong, warm milk, and egg. Mix on low speed (or stir) until a shaggy dough forms, about 1 minute.
3. Knead on medium-low (or by hand) for 5 minutes. The dough will look rough at first, then start smoothing out.
4. Add the softened butter 1 tablespoon at a time, letting each piece mix in before adding the next. Pause once or twice to scrape down the bowl if the dough is riding up the hook. Knead another 6 to 8 minutes until the dough is glossy, elastic, and stretchy. It should pass the windowpane test.
5. If the dough is extremely sticky and not improving, add flour 1 tablespoon at a time. Aim for soft and slightly tacky, not stiff.

First rise

1. Shape the dough into a ball and place it in a lightly greased bowl. Cover and let rise in a warm spot until doubled, about 60 to 75 minutes (a bit longer if using active dry yeast or if your kitchen is cool).

Shape the loaf

1. Grease a 9x5-inch loaf pan.
2. Turn the dough out onto a lightly floured surface and gently press into a rectangle. Divide into 3 equal pieces.
3. Roll each piece into a small rectangle, then roll it up tightly like a mini jelly roll. Place the three rolls seam-side down in the loaf pan.
4. Cover and let rise until very puffy, about 45 to 60 minutes. The dough should be near the top of the pan to about 1 inch above it, and it should pass the poke test.

   

Bake

1. Heat oven to 350°F.
2. Whisk together egg yolk and 1 tablespoon milk, then brush lightly over the top of the loaf.
3. Bake until deep golden brown and set, 28 to 33 minutes. If the top browns too fast, tent loosely with foil for the last 10 minutes.
4. For an extra-clear doneness check, the center should read 190°F to 200°F on an instant-read thermometer.
5. Cool in the pan for 10 minutes, then turn out onto a rack to cool completely. For the cleanest slices, cool at least 1 hour.
6. Optional but highly encouraged: brush the warm top with a little melted butter for a soft, shiny finish.

   

Practical tips and easy variations

• Weigh your flour if you can: This dough is forgiving, but a kitchen scale makes it more consistent.
• Warm spot trick: Let the dough rise in the oven with the light on (oven off). It creates a gentle, steady warmth.
• Pan size note: An 8.5x4.5-inch loaf pan works too. The loaf may be taller and may need a few extra minutes in the oven. Use color plus the internal temperature to decide.
• Make it a little sweeter: Increase sugar to 1/4 cup (50 g) for a more dessert-leaning loaf.
• Swap in some whole wheat: Replace up to 3/4 cup (90 g) of bread flour with whole wheat flour. Add 1 to 2 extra tablespoons milk if it feels dry.
• Turn it into rolls: Divide into 12 pieces, round into balls, proof in a greased 9x13-inch pan, and bake at 350°F for 18 to 22 minutes.
• Cinnamon sugar swirl: After dividing into 3 pieces, roll each out, brush lightly with melted butter, sprinkle with cinnamon sugar, then roll up and proceed. Keep the filling light so it does not leak.