Herbal Jelly (Guǹ Lìng Gāo)

Ingredients

• 25 g Herbal jelly powder
• 120 ml Cold water
• 500 ml Boiling water
• 100 g Caster sugar

Method

Slake the herbal jelly powder in cold water first. Whisk it into a smooth suspension — this matters because dry powder hitting hot liquid forms stubborn lumps that won't hydrate properly. The starch granules need cold water to separate cleanly before heat can swell them. Dissolve the caster sugar in the boiling water separately, stirring until fully dissolved. This two-stage approach gives you control: you're not fighting powder hydration and sugar dissolution at the same time.

Combine the sugar syrup with the slaked powder by pouring the hot liquid into the cold mixture whilst stirring constantly. The temperature shock and stirring action prevent lumps from forming — the already-hydrated starch granules can't clump together under these conditions. Pour slowly enough that you can stir through it; rushed work guarantees a grainy texture.

Transfer to a heavy-bottomed pot and heat over medium-low, stirring continuously. This gentle-heating is the controlling principle: too much agitation and temperature kills the delicate herbal flavours; too little and the mixture sticks to the base and scorches. Watch for the texture to thicken noticeably — you're looking for the point where it coats the back of a spoon and a trail holds its shape for a moment before flowing back in. Small bubbles beginning to break the surface signal that gelatinisation has progressed far enough. The starch granules have absorbed water and swollen; the mixture is now viscous enough to set firmly. Remove from heat immediately — overshooting by even a minute or two will give you a rubbery, over-set jelly.

Pour into moulds whilst the mixture is still hot and fluid. Work quickly: it begins to gel as it cools, and attempting to pour once it's started setting will trap air pockets and create a torn surface. Allow to cool to room temperature undisturbed, then chill in the refrigerator for 1–2 hours. The cold firms up the structure completely and improves the moulding definition. Turn out onto a plate or serve directly from the mould, depending on how cleanly you want to present it. The jelly should wobble gently with a translucent, glossy finish — if it's rubbery or opaque, you overheated the mixture.