Red Bean Soup With Sweet Potato Balls: Classic Combination

There is something deeply comforting about a warm bowl of red bean soup with sweet potato balls on a rainy Singapore evening. This classic pairing brings together the smooth, gently sweet broth of slow-simmered adzuki beans and the springy, chewy bounce of handmade sweet potato balls — a duo that has quietly anchored our hawker dessert culture for generations. Whether you grew up slurping hong dou tang (红豆汤) at a coffeeshop after dinner or you are discovering it for the first time, this combination is the kind of dessert that tastes like home.

TL;DR — Key Takeaways

- Red bean soup with sweet potato balls combines silky adzuki bean tng sui with chewy, boiled (not fried) QQ sweet potato balls.

- Soak red beans 4+ hours and simmer 1–1.5 hours for the softest texture; cook the sweet potato balls separately so they float in about 3–5 minutes.

- A standard home batch serves 4–6 people at a fraction of what you would pay at a café.

- Sweet potato balls are made from steamed sweet potato and starch — they are not tang yuan and are not deep-fried.

- Short on time? Ah Ma QQ Bowl delivers handmade sweet potato balls fresh from our Hougang home kitchen.

What Is Red Bean Soup With Sweet Potato Balls?

Red bean soup with sweet potato balls is a traditional Chinese dessert (tng sui) made by simmering adzuki beans into a sweet, slightly thick soup and adding soft, chewy sweet potato balls just before serving. It is served warm in cooler weather and chilled over ice on hot days. The dish is a staple across Singapore's dessert stalls, hawker centres and home kitchens.

The beauty of this dessert lies in its contrast. The red bean soup is mellow, earthy and lightly sweetened — often finished with a strip of dried tangerine peel (chen pi) or a knot of pandan for fragrance. The sweet potato balls, meanwhile, are all about texture: that signature QQ bounce, a Hokkien-influenced term Singaporeans use to describe a satisfying springy chewiness. One spoonful gives you both the warmth of the broth and the playful bite of the balls. It is the texture, not just the sweetness, that makes this combination a Singapore favourite.

If you have ever wondered how these chewy orange spheres differ from glutinous rice dumplings, our guide on sweet potato balls vs tang yuan breaks it down clearly.

Why Do Red Bean Soup and Sweet Potato Balls Go So Well Together?

Red bean soup and sweet potato balls pair perfectly because they balance each other in texture, colour and flavour. The soft, almost creamy red bean broth needs a chewy element to keep each spoonful interesting, and the naturally sweet, golden-orange sweet potato balls provide exactly that — plus a gentle earthy sweetness that echoes the beans without competing.

Think of it the way you would a good plate of chwee kueh with chai poh, or chendol with its layers of grass jelly and red beans: Singapore desserts thrive on textural play. Here is why the match works so well:

• Texture harmony: Smooth soup against bouncy, chewy balls.
• Flavour balance: Earthy adzuki beans complement the mild sweetness of sweet potato.
• Colour appeal: Deep maroon broth dotted with bright orange balls looks irresistible.
• Temperature flexibility: Equally delicious served piping hot or iced.

This is also why sweet potato balls are such a versatile add-on. The same balls that shine in red bean soup are wonderful in green bean soup, peanut soup, or a simple bowl of ginger syrup — a flexibility we explore further in our look at black sesame sweet potato balls.

How to Make Red Bean Soup With Sweet Potato Balls at Home

Making red bean soup with sweet potato balls at home takes about 1.5 to 2 hours, mostly hands-off simmering time, and serves 4 to 6 people. The ingredient cost is very affordable, making it one of the most budget-friendly comfort desserts you can prepare in an HDB kitchen.

Ingredients (Serves 4–6)

For the red bean soup:

• 250g dried adzuki (red) beans, soaked 4+ hours
• 1.5 litres water
• 80–100g rock sugar (adjust to taste)
• 2 pandan leaves, knotted
• 1 small piece dried tangerine peel (optional)

For the sweet potato balls (or use ready-made):

• 300g orange sweet potato, steamed and mashed
• 120–150g tapioca starch (or sweet potato starch)
• 2 tablespoons sugar
• A little warm water as needed

Step-by-Step Method

1. Cook the beans. Drain the soaked beans and bring them to a boil in 1.5 litres of fresh water. Lower the heat and simmer for 1 to 1.5 hours until the beans soften and start to break down. Add the pandan and tangerine peel midway.
2. Sweeten. Once the beans are tender, stir in the rock sugar until dissolved. For a thicker soup, mash some of the beans against the side of the pot.
3. Make the dough. Mix the warm mashed sweet potato with sugar, then gradually work in the tapioca starch until you get a smooth, pliable dough that does not stick to your hands.
4. Shape the balls. Roll the dough into a log and cut into small, bite-sized pieces, then roll each into a ball. Authentic sweet potato balls are always boiled, never fried — boiling is what gives them that soft, chewy QQ centre.
5. Boil separately. Cook the balls in a separate pot of boiling water. They are ready when they float to the surface, usually in 3 to 5 minutes.
6. Assemble. Ladle the warm red bean soup into bowls and add a generous scoop of sweet potato balls. Serve hot, or chill everything and serve over ice.

Ah Ma's tip: Cook the sweet potato balls in plain water rather than directly in the soup. This keeps your red bean soup clean and prevents the starch from clouding the broth.

If you would rather skip the rolling and steaming altogether, we deliver handmade traditional sweet potato balls fresh from our Hougang home kitchen — ready to drop straight into your soup. You can see all the ways to get them in our guide on how to order sweet potato balls in Singapore.

Tips for the Best Red Bean Soup With Sweet Potato Balls

The secret to the best red bean soup with sweet potato balls is patience with the beans and freshness with the balls. Beans that are rushed stay grainy, and sweet potato balls that sit too long lose their bounce. Get these two things right and the rest falls into place.

• Soak overnight. Longer soaking yields a creamier, more luscious soup.
• Use rock sugar. It gives a rounder, cleaner sweetness than white sugar.
• Don't overcook the balls. Pull them out the moment they float to keep that QQ chew.
• Eat fresh. Sweet potato balls are best enjoyed the day they are made; their texture firms up if refrigerated too long.
• Balance the sweetness. A pinch of salt in the soup makes the flavours pop.

For families cooking for older relatives, this dessert is naturally gentle on the palate — soft beans and tender balls make it ideal comfort food, as we discuss in our roundup of soft, nutritious desserts for elderly parents. And because sweet potato balls are plant-based, they fit neatly into a meat-free lifestyle too; see our list of vegan desserts in Singapore.

Where to Get Sweet Potato Balls in Singapore

You can find sweet potato balls at dessert stalls, pasar malam stalls and home-based businesses across Singapore, with prices that are typically very wallet-friendly at hawker stalls. For consistent QQ texture and freshness, many Singaporeans now turn to home-based dessert makers who roll their balls by hand.

At Ah Ma QQ Bowl, we make our sweet potato balls the old-fashioned way — boiled, never fried — in our Hougang home kitchen and deliver them fresh so they keep that signature chewiness. They are the perfect match for a homemade pot of red bean soup, or for our specialty green bean soup. If you love hunting down dessert deals while you are at it, sites like WhyNotDeals round up the latest food and dining promotions across the island.

Curious about the night-market versions of this treat? Our pasar malam desserts guide is a fun read for any dessert lover.

A Bowl Worth Sharing

Red bean soup with sweet potato balls is more than a recipe — it is a little ritual of warmth, the kind your ah ma might have ladled out after a long day. Make a big pot, gather the family around, and let the sweet, earthy aroma do the rest. Whether you simmer it from scratch or top it with our handmade balls, this classic combination never goes out of style.

References

1. HealthHub (Health Promotion Board) — Healthier Dessert Choices
2. Singapore Food Agency — Selling Food From Home
3. National Heritage Board — Singapore Food Heritage
4. Ah Ma QQ Bowl — Handmade Sweet Potato Balls
5. WhyNotDeals — Singapore Food & Dining Deals