Vietnamese Glutinous Rice Balls with Ginger Syrup

Vietnamese glutinous rice balls, often served as chè trôi nước, are chewy rice-flour dumplings with a sweet mung bean center, floating in warm ginger syrup. This home-style version pairs the soft, lightly sweet filling with optional coconut sauce; recipes and serving styles vary across Vietnam and from family to family.

Ingredients

For the filling: 1/2 cup (100 g) dried split mung beans, rinsed; 3 cups (710 ml) water for soaking and cooking; 2 tablespoons (25 g) granulated sugar; 2 tablespoons (15 g) finely shredded unsweetened coconut; and 1/8 teaspoon (about 0.5 g) fine salt.
For the dough: 2 cups (300 g) glutinous rice flour, also labeled sweet rice flour; 3/4 cup (180 ml) warm water, plus up to 2 tablespoons (30 ml) more if needed; and 1/8 teaspoon (about 0.5 g) fine salt.
For the ginger syrup: 4 cups (950 ml) water; 1/2 cup (100 g) packed palm sugar, grated or chopped; 2 ounces (55 g) fresh ginger, sliced into coins; and 1/8 teaspoon (about 0.5 g) fine salt.
Optional coconut sauce: 1 cup (240 ml) canned coconut milk; 1 tablespoon (12 g) granulated sugar; a pinch of salt; and 1 teaspoon (3 g) tapioca starch stirred with 1 tablespoon (15 ml) cool water.
To serve: 1 tablespoon (9 g) toasted sesame seeds and 2 tablespoons (10 g) finely shredded coconut, if desired.

Instructions

Soak the mung beans. Rinse the split mung beans until the water runs mostly clear. Put them in a bowl, cover with the measured soaking water, and leave for 2 hours. Drain them well. The soak helps the beans cook evenly; do not use the soaking water for the syrup.
Cook the filling. Put the drained beans in a small saucepan with fresh water just to cover, or steam them in a heatproof dish over simmering water. Cook for about 20 minutes, until very tender and easy to mash. Drain thoroughly if boiled. Mash the warm beans with the sugar, shredded coconut, and salt until they hold together as a soft paste. Let the mixture cool for 15 minutes, then divide it into 12 equal portions and roll each into a small ball. If the paste feels loose, chill it briefly before shaping; it should be soft but not runny.
Mix the dough. Combine the glutinous rice flour and salt in a bowl. Add 3/4 cup (180 ml) warm water gradually, stirring until shaggy clumps form. Knead in the bowl or on a clean counter for 3 to 5 minutes until the dough is smooth, pliable, and similar in feel to soft modeling clay. If it cracks when pressed, knead in extra water a teaspoon at a time. If it sticks heavily to your hands, dust in a little more flour. Cover the dough with a damp towel while you work so its surface does not dry out.
Fill and seal the balls. Divide the dough into 12 portions. Roll one portion into a ball, flatten it into a disk about 2 1/2 inches (6 cm) wide, and place one mung bean portion in the middle. Bring the dough edges up around the filling and pinch them together securely. Roll gently between your palms to make a smooth ball, checking that no filling shows through. Repeat with the remaining dough and filling. Keep finished balls covered; cracks can open during cooking.
Make the ginger syrup. While shaping, combine the syrup water, palm sugar, ginger, and salt in a wide pot. Bring to a gentle boil over medium heat, stirring until the sugar dissolves, then simmer for 8 minutes. Taste carefully and adjust the sweetness with a little more sugar if you prefer. Keep the syrup at a gentle simmer rather than a vigorous boil, which can make the dumplings knock against one another.
Cook the dumplings. Lower the filled balls into the simmering syrup, leaving room for them to move. Cook for about 8 minutes, turning them gently once if needed. They are ready when they look slightly translucent and float at the surface; give a newly floating ball another minute if its center still feels firm. Avoid stirring hard, as the tender dough can tear. If your pot is small, cook the balls in two batches and return them to the syrup afterward.
Make the optional coconut sauce. In a small saucepan, warm the coconut milk, sugar, and a pinch of salt over medium-low heat until steaming, not boiling. Stir the tapioca starch mixture again, then whisk it into the coconut milk. Cook for about 1 minute, stirring, until lightly thickened and glossy. Take it off the heat; it will thicken a little more as it cools.
Serve. Spoon two warm rice balls into each small bowl with some ginger syrup. Add a spoonful of coconut sauce and a sprinkle of sesame seeds or shredded coconut, if using. Include a slice of the simmered ginger in the bowl for a stronger ginger aroma, or leave it out for a milder serving.

Tips

Choose the right flour. Glutinous rice flour is made from sticky rice and contains no gluten. Regular rice flour will not produce the same stretchy, chewy dough, so check the package label. Asian grocery stores often carry it; sweet rice flour is the same type of flour.
Control the dough texture gradually. Flour brands and humidity affect how much water the dough takes. Add the water in stages and stop when the dough is smooth and easy to shape. A dry dough cracks; an overly wet dough is hard to seal and may stick to the pot.
Seal without trapping air. Press the dough around the filling before pinching it closed, then smooth the seam. An air pocket or thin patch can split as the ball heats. Keep unused dough and shaped balls covered while you work.
Use a practical sugar substitute. Palm sugar gives the syrup a rounded, caramel-like flavor. If it is unavailable, use light brown sugar in the same amount; the syrup will taste a little more molasses-forward. For the filling, ordinary granulated sugar is fine.

Serving Suggestions

Serve the balls warm in individual bowls, with enough ginger syrup to make each portion spoonable. The contrast between chewy dumpling, soft bean filling, fragrant syrup, and creamy coconut sauce is the point, so keep the toppings simple. Toasted sesame seeds add a nutty finish, while extra shredded coconut makes the bowl richer. For a less sweet dessert, use a smaller ladle of syrup and offer the coconut sauce on the side.

These are satisfying after a Vietnamese meal but also work as a small afternoon sweet. Two balls per person makes six modest servings from this recipe. If serving a larger group, keep the dumplings warm in the syrup over very low heat for a short time, without letting the pot boil; prolonged heating can soften their shape.

Variations

Make an unfilled version. Leave out the mung bean filling, divide the dough into smaller pieces, and roll them into smooth balls. They cook in the same ginger syrup, though smaller pieces may need less time. This is a straightforward option if you want the chewy dumpling and ginger flavor without the extra filling step.

Adjust the filling. For a more coconut-forward center, replace the shredded coconut with an equal amount of finely chopped coconut or add another teaspoon of coconut. Some versions use a different balance of mung bean, sugar, and coconut, so adjust to taste while keeping the paste firm enough to roll. Do not add liquid coconut milk to the filling, as a wet center is harder to seal.

Change the syrup flavor. Keep the ginger for the familiar warming fragrance, or add a strip of orange peel while the syrup simmers and remove it before serving. If palm sugar is hard to find, light brown sugar is the easiest substitute. White sugar also works, but gives a cleaner, less caramel-like sweetness.

Make the coconut topping dairy-free. The optional sauce is already made with coconut milk rather than dairy. If you do not have tapioca starch, omit the thickener and serve the coconut milk gently warmed and unthickened; it will be thinner but still flavorful. Avoid boiling canned coconut milk hard, which can cause it to separate.

Storage and Reheating

For food safety, refrigerate cooked rice balls within 2 hours. Store the dumplings submerged in their ginger syrup in a covered container for up to 3 days; they are best sooner because the dough gradually firms and absorbs syrup. Keep the coconut sauce in a separate covered container and use it within 3 days. Refrigerate promptly rather than leaving the pot at room temperature.

Reheat only the portion you plan to serve. Warm the dumplings and syrup gently in a small saucepan over low heat, stirring carefully, until hot throughout. Add a splash of water if the syrup has thickened. The coconut sauce can be warmed separately over low heat with a spoonful of water, whisking until smooth. Avoid repeated reheating, which can make the balls overly soft. Freezing is possible, but the texture may become less tender after thawing; freeze the balls with syrup in a freezer-safe container for up to 1 month, thaw overnight in the refrigerator, and reheat gently.

Frequently Asked Questions

Are Vietnamese glutinous rice balls gluten-free?
Glutinous rice flour is made from rice, not wheat, so the dough itself is naturally gluten-free. Check the flour and any packaged toppings for cross-contact or added ingredients if you need to avoid gluten strictly. The word “glutinous” describes the sticky texture, not gluten content.

Why did my rice balls crack or open?
The dough may be too dry, the seam may be thin, or air may be trapped around the filling. Knead a little water into dry dough, keep it covered, and smooth the wrapper evenly around each center. Seal the seam completely before rolling, and simmer gently rather than boiling vigorously.

Can I make them without mung beans?
Yes. You can cook small portions of plain dough in the syrup, or use another firm, rollable filling. Plain balls are simpler and still chewy, but they will not have the sweet bean center associated with many filled chè trôi nước versions. Avoid loose or watery fillings because they are difficult to enclose.

Can I prepare the balls ahead?
You can make the filling and ginger syrup a day ahead and refrigerate them separately. For the best dough texture, mix, fill, and cook the balls on the day you plan to serve them. If you shape them a few hours ahead, arrange them in a single layer on a lightly floured tray, cover, and refrigerate; bring them out while the syrup heats.

What is the difference between chè trôi nước and bánh trôi?
Names and customs vary by region. Chè trôi nước commonly refers to filled rice-flour balls served in ginger syrup, while bánh trôi in northern Vietnamese cooking often describes smaller, typically unfilled rice balls served in a different style. There are regional and family variations, so the names are not used identically everywhere.

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