Tong Sui: What It Is & 8 Sweet Soups to Make at Home

Ask someone what Chinese dessert looks like and they'll often draw a blank — or picture the fortune cookie that isn't actually Chinese at all. The real answer, in most Chinese homes, is a bowl of something gently sweet, eaten with a spoon. That something is tong sui (糖水), and once you've had a good bowl, it's hard to go back.

Literally translated, tong sui means "sugar water" — which undersells it enormously. It's a whole family of sweet soups: silky, soupy, spoonable desserts built from beans, dried fruits, mushrooms, seeds, and a little rock sugar. Some are served piping hot in winter, others chilled in a glass in summer. None of them are the dense, frosted, tooth-aching sweet of a Western dessert. That's rather the point.

This is the map: what tong sui actually is, the small pantry behind nearly all of it, and the bowls worth starting with — every one of them with a full recipe on this site.

What makes tong sui tong sui

Three things set it apart from the dessert you might be used to:

It's a soup. You eat it with a spoon from a bowl or sip it from a glass. The texture ranges from thin and brothy to thick and almost pudding-like, but it's always something you spoon or drink — never something you slice.

It's lightly sweet. Tong sui leans on the natural sweetness of its ingredients — the caramel of red dates, the honey of dried longan, the mellow starch of sweet potato — with just enough rock sugar to round it out. You walk away from a bowl refreshed rather than overwhelmed.

It's everyday food, not special-occasion food. Across much of southern China, especially around Guangdong and Hong Kong, a bowl of tong sui after dinner is as ordinary as a cup of tea. There are entire dessert shops devoted to nothing else.

The pantry behind almost all of it

Here's what makes tong sui so approachable: nearly all of it is assembled from a small, shelf-stable set of dried goods, plus rock sugar. Stock a handful of these and you can make most of the recipes on this site without another trip to the store:

Rock sugar (冰糖) — the clean, mellow sweetener that defines the category.
Dried snow fungus (银耳) — turns silky and gently gelatinous; the base of the most classic bowl.
Red dates (红枣) and dried longan (桂圆) — the natural caramel-and-honey backbone.
Goji berries (枸杞) — a bright, sweet-tart finish, added in the last few minutes.
Black sesame (黑芝麻) — ground into the richest, toastiest bowl of all.
Mung beans (绿豆) and red beans (红豆) — the foundation of the summer classics.
Peach gum (桃胶) — hard amber resin that soaks into soft, jelly-like pieces.

The full list, with what to look for and where to buy it, is on the Pantry page.

The eight bowls worth knowing

Tong sui is a big family. Here are the ones I'd start with — each links to a full recipe.

Chilled, for hot weather

Sweet mung bean soup (绿豆汤) — the quintessential summer cooler. Mung beans simmered soft and lightly sweetened, then chilled. The bowl half of China reaches for when the heat is unbearable.

Chilled snow fungus soup with pear (银耳雪梨汤) — the gateway bowl. Snow fungus simmered until silky with pear, red dates, and goji, then served cold. If you make one tong sui, make this.

Red bean soup (红豆汤) — adzuki beans cooked down to a thick, comforting sweetness. Lovely warm in winter, equally good chilled — or frozen into popsicles.

Mango sago with coconut (西米露) — the crowd-pleaser. Chewy tapioca pearls in sweet coconut with ripe mango, served ice-cold. The one that disappears fastest at a gathering.

Warm, for cooler days

Black sesame soup (黑芝麻糊) — toasted black sesame ground into a thick, glossy, intensely nutty bowl. Rich, warming, and worlds better than the instant packets.

Sweet potato and ginger soup (姜汁番薯糖水) — soft sweet potato in a fragrant ginger syrup. Three ingredients, one pot, endlessly comforting.

Something a little different

Peach gum dessert soup (桃胶羹) — the glossy amber jelly dessert you've seen online. All about texture: soft, wobbly, translucent pieces in a light sweet soup.

Red date and longan tea (桂圆红枣茶) — the simplest of the lot. Steep dried red dates and longan in hot water for five minutes and you have a naturally sweet cup, no sugar needed.

Warm or chilled? Let the season decide

One of the nicest things about tong sui is how it shifts with the weather. The same small pantry carries you through the year:

Summer: chilled mung bean and red bean soups, cold snow fungus with pear, mango sago over ice — light, refreshing, served cold.
Cooler months: warm black sesame soup, ginger and sweet potato, hot snow fungus — bowls that warm you from the inside.

You don't need different ingredients for the seasons, just a different pot and a different serving temperature. That's why a small pantry stretches so far.

The general method

Once you've made a couple, you'll notice nearly every tong sui follows the same unhurried rhythm:

Soak whatever dried ingredients need it — snow fungus for half an hour, peach gum overnight, beans for a few hours.
Simmer low and slow until everything is tender and the textures have come together. This is where the patience goes.
Sweeten near the end with rock sugar, tasting as you go.
Add the delicate things last — goji berries only need a few minutes to plump up.
Serve warm, or chill it and serve cold.

That's genuinely it. There's very little that can go wrong, and the kitchen smells wonderful while it happens.

Where to start

If you're new to all of this, start with the chilled snow fungus soup with pear in warm weather, or the black sesame soup when it's cool. Both are forgiving, both use pantry staples, and both will tell you quickly whether this style of dessert is for you.

I suspect it will be.

New sweet soup recipes land here every week — subscribe below to cook along.