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    Henry's 20% Whole Wheat Tangzhong Sandwich Bread

    Shared on 10/2/2025

    By Henry Hunter
    This Japanese-inspired milk bread uses the tangzhong method to create an impossibly soft sandwich loaf with 20% whole wheat flour. By pre-cooking the whole wheat flour with milk, we get a bread that's light, fluffy, and stays fresh for nearly a week without preservatives. Perfect for sandwiches, toast, or just eating warm with butter.
    Henry's 20% Whole Wheat Tangzhong Sandwich Bread
    Prep Time
    30 minutes
    Bake Time
    40 minutes
    Yield
    16 slices

    Ingredients

    • ¼ cup + 1 tablespoon Whole wheat flour for tangzhong
    • ¾ cup + 2 tablespoons Whole milk for tangzhong
    • All of it Cooled tangzhong
    • ½ cup Whole wheat flour for dough
    • 2¾ cups, plus extra for dusting Bread flour
    • 2½ teaspoons Instant yeast
    • ¼ cup Honey
    • ½ cup Whole milk, warm
    • 2 tablespoons Unsalted butter, softened
    • 1¾ teaspoons Fine sea salt
    • Whole milk for brushing
    • Melted butter for brushing after baking
    • Rolled oats or seeds for topping

    Instructions

    1
    Whisk 40g whole wheat flour and 200g milk together in a small saucepan until completely smooth with no lumps.
    2
    Cook over medium heat, stirring constantly with a whisk or wooden spoon. The mixture will thicken suddenly into a thick paste after 2-3 minutes.
    3
    Continue stirring until the mixture reaches 149°F (65°C) and your spoon leaves clear trails in the paste.
    4
    Remove from heat, scrape into a bowl, and press plastic wrap directly onto the surface. Cool to room temperature, about 30-45 minutes.
    5
    In a stand mixer bowl with dough hook, combine cooled tangzhong, 60g whole wheat flour, 340g bread flour, yeast, honey, and warm milk. Mix on low speed for 2 minutes until a shaggy dough forms.
    6
    Add butter and salt. Knead on medium-low speed for 8-10 minutes until dough is smooth, elastic, and slightly tacky. It should pull away from the bowl sides.
    7
    Form dough into a ball, place in a lightly buttered bowl, and turn to coat. Cover with plastic wrap.
    8
    Let rise in a warm spot (75-80°F) until doubled in size, 1 to 1.5 hours.
    9
    Turn dough onto a lightly floured counter and press gently into a 9x12-inch rectangle.
    10
    Starting from a short end, roll tightly like a jelly roll, pressing out air pockets as you go.
    11
    Pinch the seam closed and tuck ends under.
    12
    Place seam-side down in a greased 9x5-inch loaf pan.
    13
    Cover loosely and let rise until dough crowns 1 inch above the pan rim, 45-75 minutes.
    14
    Preheat oven to 375°F (190°C) during the last 15 minutes of rising. Position rack in lower third.
    15
    Optional: Brush top lightly with milk. Sprinkle with oats or seeds if desired.
    16
    Bake at 375°F for 15 minutes, then reduce temperature to 350°F (without opening door). Continue baking 20-25 minutes more until deep golden brown and internal temperature reaches 190°F (88°C). Total bake time: 35-40 minutes.
    17
    If browning too quickly, tent with foil after 25 minutes.
    18
    Remove from oven and immediately turn out onto a wire rack. Optional: brush with melted butter while hot.
    19
    Cool completely before slicing, at least 1 hour.

    Equipment

    • Small saucepan
    • Whisk or wooden spoon
    • Instant-read thermometer (optional but helpful)
    • Stand mixer with dough hook
    • 9x5-inch loaf pan
    • Wire cooling rack
    • Plastic wrap
    • Kitchen scale (recommended)

    Tips

    • •Tangzhong is a Japanese technique where you cook a portion of flour with liquid to create a paste, resulting in softer bread that stays fresh longer.
    • •Whole wheat flour can make bread dense and dry; cooking it in the tangzhong softens the bran and pre-hydrates the flour.
    • •Butter creates a classic soft texture in bread with better browning and richness; for a lighter loaf, substitute with olive oil.
    • •For those without a mixer, knead by hand for 12-15 minutes until smooth and elastic.
    • •For better flavor, refrigerate dough after the first rise for 8-24 hours before shaping.
    • •Use King Arthur bread and whole wheat flour for best results; all-purpose flour produces a shorter loaf.
    • •If using active dry yeast, dissolve it in warm milk with honey and let it foam before mixing.

    Troubleshooting

    • Issue: Dense loaf
      Solution: Under-kneaded or under-proofed. Be patient with rises.
    • Issue: Gummy center
      Solution: Not baked long enough. Check internal temp (190°F).
    • Issue: Collapsed loaf
      Solution: Over-proofed. Bake when dough is just 1 inch above the pan rim.
    • Issue: Too sticky
      Solution: Add flour 1 tablespoon at a time during kneading.
    • Issue: Didn't rise
      Solution: Check yeast expiration and liquid temperature (should be 100-110°F).

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