Tangzhong: the cooked flour paste behind soft milk bread

Tangzhong is a paste made by cooking a small amount of flour with water or milk until it thickens, then mixing it into bread dough. The cooked starch holds extra water, so the baked loaf has a soft, springy crumb that stays fresh longer. It is the main trick behind milk bread and shokupan.

What is tangzhong?

Tangzhong is a cooked flour and liquid paste used as a pre-ferment in soft breads. It is sometimes called a water roux, because the thick, glossy result looks like the base for a white sauce.

The technique is common in Chinese, Taiwanese and Japanese bakeries and has spread to home baking worldwide. Its popularity outside Asia is often credited to a Taiwanese cookbook, though soft breads made with similar pastes are older than any one book, and the exact history is not settled.

How does tangzhong make bread soft?

Tangzhong makes bread soft because heating flour with liquid makes the starch swell and absorb far more water than raw flour can. That water stays bound in the dough through baking, so the finished crumb is moist and tender.

At around 65 degrees Celsius, starch granules swell and thicken the mixture. Mixing this gel into the main dough means the loaf contains more water without feeling wet or sticky to handle. The extra moisture also slows staling, so tangzhong bread stays soft for more days than a lean loaf.

What ratio is used for tangzhong?

The usual ratio is one part flour to five parts liquid by weight, and the paste is generally 5 to 10 percent of the total flour in the recipe. Treat these numbers as typical rather than fixed, since recipes differ.

Some bakers use a one to four ratio, which gives a thicker paste. Milk adds a little flavour and richness, while water gives a cleaner taste.

How do you make tangzhong step by step?

To make tangzhong, whisk flour into cold liquid, heat it gently while stirring until thick, and cool it before adding it to dough. The whole process takes about five minutes.

1. Whisk the flour and liquid in a small saucepan until no lumps remain.
2. Heat over low to medium heat, stirring constantly.
3. Cook until the mixture thickens and leaves lines when you drag the whisk, about 65 degrees Celsius.
4. Remove from the heat and transfer to a bowl.
5. Cover the surface with cling film and cool to room temperature.
6. Mix into the dough in place of part of the flour and liquid.

Stirring is important. Without it the flour sticks to the base of the pan and forms lumps.

How much does tangzhong change the dough?

Tangzhong replaces only a small share of the flour and liquid, yet it changes how the dough feels and bakes. The dough is stickier and softer at first and takes longer to knead, and it bakes into a loaf with a finer, more elastic crumb.

Bakers often raise the total liquid in the recipe a little to account for the paste. A dough with tangzhong also browns slightly faster because of the milk and sugar, so a loose foil tent late in baking can protect the top.

What is the difference between tangzhong and yudane?

Tangzhong is cooked on the stove, while yudane is made by pouring boiling water over flour and mixing. Both pre-gelatinise some of the starch, so both give soft, moist bread, but yudane is simpler and tends to give a slightly chewier crumb.

Yudane is commonly used in Japanese shokupan recipes, and tangzhong in Chinese and Taiwanese ones. Home bakers use the names loosely, and many recipes work with either. If a recipe asks for one, using the other with the same flour and water weights usually works with small changes to hydration.

Which breads use tangzhong?

Tangzhong is used in milk bread, shokupan, soft dinner rolls, cinnamon rolls, steamed buns and filled bakery buns. Any enriched bread that should stay soft is a candidate.

• Shokupan and milk bread: the classic use, for soft, fine-crumbed loaves.
• Soft dinner rolls and burger buns: the dough stays tender after cooling.
• Cinnamon and sweet rolls: soft, pull-apart texture.
• Filled buns: custard or savoury filled buns in Asian bakeries.
• Bread for sandwiches: soft slices that do not tear when filled.

Is tangzhong worth the extra step?

Tangzhong is worth it if you want bread that stays soft for days, such as sandwich loaves, rolls and buns. It adds about five minutes and one small pan, and the difference in texture is easy to notice.

For a rustic, crusty loaf it is not needed, since the goal there is an open, chewy crumb and a crisp crust. Tangzhong suits breads where tenderness matters most. If you bake once a week and slice the loaf over several days, the longer softness is the practical benefit.

What mistakes should you avoid with tangzhong?

The most common mistakes are overcooking the paste, adding it hot, and treating the dough as too wet. Each one makes the bread harder to handle or gives a gummy crumb.

• Overcooking: a paste cooked until very stiff can leave lumps. Stop when it thickens like pudding.
• Adding it warm: hot paste can start to cook the yeast. Cool it first.
• Too little kneading: tangzhong dough is soft and sticky. Knead longer until it becomes smooth and elastic.
• Adding too much flour: resist adding extra flour at the start. The dough firms up as the gluten develops.

Where does NOS. Bakehouse & Cafe fit in?

NOS. Bakehouse & Cafe in Dutton Park, Brisbane, serves sandos on house-made shokupan, according to the recorded menu. Whether the cafe uses tangzhong is not stated anywhere, so this guide makes no claim about its recipe.

For readers who want to try the sandos, the Uber Eats app lists the Teriyaki Tofu Sando at $19.00 and the Crispy Chicken Katsu Sando at $19.90, read on 14 November 2026. In-store prices can differ. Browse the menu page and check the hours and location page first, because sources disagree on opening days. This independent guide takes no orders.

Common questions

Everything practical is on the home page: NOS. Bakehouse & Cafe hours, menu and directions.

This article is general information from an independent guide, not from NOS. Bakehouse & Cafe itself. For the store’s current details see hours and location.