Cha Chaan Teng Taro and Coconut Sago
椰汁芋頭西米露·(yeh-zap wu-tau sai-mai-lou)
Tong Sui: Nostalgic Sweet Endings
If you ever found yourself in a Hong Kong cafe with your family, you know this bowl. It arrives at the end of a heavy meal—a warm, fragrant soup of coconut milk dotted with chewy tapioca and tender cubes of taro. It looks deceptively simple, but getting it exactly right relies on grandmother’s unwritten laws: never wash taro before peeling it, always add sugar after the root softens, and never let raw sago touch cold water. Follow these rules, and you can recreate the authentic, deeply comforting taste of a Chinatown banquet right in your own kitchen on a Tuesday night.
Before you start
Source the correct taro.
You need Binglang taro—the large, football-sized roots with white flesh speckled with purple fibers, often sold pre-cut and plastic-wrapped in the produce section. Do not use the small, hairy Eddoe taro, which cooks up slimy rather than fluffy.
Ingredients
- large taro root1 lb
- water8 cup
- small white sago pearls1/2 cup
- water3 cup
- rock sugar1/2 cup
- salt1/8 tsp
- full-fat coconut milk13 1/2 oz
- evaporated milk1/3 cup
Method
- 01
Peel the taro completely dry to spare yourself a night of furiously itchy hands.
The raw skin contains sharp crystals of calcium oxalate that cause intense stinging if they get wet and touch bare skin. Keep your hands, knife, and cutting board bone-dry while slicing off the thick brown exterior, only rinsing the cubes under cold water once they are fully chopped.
- 02
Boil and steep the sago with absolute discipline.
Bring eight cups of water to a violent, rolling boil. Do not rinse the dry sago beforehand; pour it straight into the boiling water and stir immediately. Boil uncovered for 10 minutes, turn off the heat, cover with a tight lid, and let it steep undisturbed for 15 minutes.
- 03
Shock the pearls in cold water.
Once the pearls turn translucent and lose their hard white core, drain them immediately. Rinse them vigorously under cold running water for a minute to wash away the sticky surface starches and lock in a bouncy, chewy texture.
- 04
Simmer the taro.
While the sago is steeping, combine the rinsed taro cubes and the remaining three cups of water in a medium saucepan. Bring to a boil, then lower the heat and simmer partially covered for 15 minutes until the taro yields easily to a fork.
- 05
Observe grandmother's rule of sugar: only add it once the taro is tender.
If you add sugar to the boiling water at the beginning, osmotic pressure will lock the taro up and it will never soften. Once the cubes are thoroughly cooked, stir in the rock sugar and salt, cooking gently until fully dissolved.
- 06
Mash a third of the taro to build a velvety base.
Use a slotted spoon to scoop out a third of the cooked taro cubes. Mash them into a smooth paste with a fork, then stir the paste back into the soup pot to act as a natural thickener.
- 07
Stir in the milks and assemble.
Lower the heat and pour in the coconut milk and evaporated milk, letting everything warm through gently without boiling. Stir in the cooked sago pearls, portion into bowls, and serve immediately.
Notes
Store leftover sago completely separate from the broth.
Refrigerated tapioca pearls will undergo starch retrogradation, hardening into inedible pebbles overnight. Keep the cooked sago in its own container and briefly microwave it or drop it in boiling water to soften before mixing it into reheated leftover soup.
Granulated sugar works in a pinch.
Rock sugar gives a much cleaner, mineral sweetness that lets the taro shine, but regular white sugar will do the job perfectly well on a busy weeknight.