Yeung Ji Gam Lu
楊枝甘露·(yeung ji gam lu)
Tong Sui for the Soul: The Rhythms of Dessert
If there is a dessert that captures the dynamic pulse of modern Hong Kong, it is Yeung Ji Gam Lu. Invented in the 1980s to beat the tropical heat, this vibrant yellow bowl quickly became the reigning king of neighborhood sweet soup shops. For the first-generation kid, replicating it at home means translating grandma’s intuition into exact measurements. The secret is a starch-cooking technique called Guo Leng He, shocking steeped sago pearls in ice water to wash away the sticky starch. Paired with sweet Honey mangoes and the unmistakable, rich backbone of evaporated milk, it hits that exact, mind-blowing note of a sweltering Hong Kong summer.
Before you start
Brew the rock sugar syrup.
In a small saucepan, combine one-third cup water and the rock sugar over medium-low heat until completely dissolved, then set aside to cool completely.
Ingredients
- water6 cup
- small white sago pearls1/3 cup
- water1/3 cup
- rock sugar crystals1/4 cup
- Ataulfo mangoes4 large
- red pomelo or ruby red grapefruit1 large
- full-fat canned coconut milk3/4 cup
- evaporated milk1/2 cup
Method
- 01
Bring six cups of water to a vigorous rolling boil in a medium pot.
Pour in the sago pearls and stir immediately to prevent them from sticking to the bottom, boiling for eight to ten minutes.
- 02
Turn off the heat, clamp the lid tightly onto the pot, and steep the pearls undisturbed for fifteen to twenty minutes.
The residual heat gently cooks the core of the pearls without agitating them into mush; they are ready when completely translucent with no hard white dots in the center.
- 03
Drain the pearls through a fine-mesh strainer and immediately shock them in a bowl of ice-cold water.
This essential technique, known as Guo Leng He, stops the cooking and washes away the extruded starches that cause clumping.
- 04
Peel and pit the mangoes, dice one-third of the flesh into neat cubes for garnish, and place the remaining two-thirds into a blender.
- 05
Blend the mango, cooled rock sugar syrup, coconut milk, and evaporated milk until incredibly smooth and velvety.
- 06
Pour the blended mango base into a large mixing bowl and gently fold in the drained sago pearls and half of the separated citrus vesicles.
- 07
Cover the bowl tightly and chill in the refrigerator for at least two hours.
This resting period is crucial to allow the flavors to meld and the coconut milk to thicken.
- 08
Ladle the chilled soup into individual bowls and garnish generously with the reserved diced mango and remaining citrus vesicles.
Notes
Evaporated milk is non-negotiable for authentic flavor.
In Hong Kong culinary tradition, evaporated milk provides a specific caramelized richness and mouthfeel that fresh milk or pure coconut milk cannot replicate. Do not confuse it with sweetened condensed milk.
Adjust the sugar based on the fruit's natural sweetness.
Since mangoes fluctuate wildly in sucrose levels based on the season, taste the blended puree before chilling and adjust the rock sugar syrup accordingly.
Do not substitute Tommy Atkins mangoes for Ataulfos.
The standard large green-and-red mangoes found in American supermarkets are fibrous and watery, which will completely ruin the silky texture of the dessert.