Method
- Bring water to a rolling boil in a kettle. Place the tea leaves in a cloth tea-sock or fine sieve set over a heatproof jug.
- Pour the boiling water through the leaves. Catch the tea, then pour it back through a second time — this double-pull (chak cha) is how Thai vendors extract maximum colour and tannin.
- Stir in the sugar while the tea is hot until fully dissolved. Cool to room temperature, then refrigerate at least one hour. Cold tea takes the milk better than warm.
- Stir the condensed milk into the cooled tea. Taste — Thai cha yen should be aggressively sweet, almost dessert-like. Adjust if needed; it's not the drink for restraint.
- Fill four tall glasses with ice to the brim. Pour the cold sweetened tea over the ice to about three-quarters full.
- Slowly pour 30ml of evaporated milk over the back of a spoon onto each glass — it floats in a cloudy white layer over the orange tea. Serve with a long spoon and a straw; the drinker stirs at the table.
Common questions
Can Cha Yen be made ahead?
Cha Yen is best made and eaten the same day, but the components can be prepped earlier — chop and measure the ingredients up to a day ahead, refrigerated separately. Final cooking takes about 10 minutes.
Is Cha Yen spicy?
Cha Yen as written is mild to mildly warming — the heat comes from aromatics rather than chili. Add fresh sliced chili or chili oil at the end if you'd like to push it spicier.
Is Cha Yen vegetarian or gluten-free?
Cha Yen is suitable for vegetarian (and vegan if dairy is omitted) diets.
How hard is Cha Yen to make at home?
Cha Yen is approachable for a home cook with basic stove skills — total time about 15 minutes, no special technique required.
Can Cha Yen be scaled up or down?
This recipe is written for 4 servings. To scale, multiply each ingredient proportionally; the cooking times stay the same up to about double the volume. Beyond that, expect to cook in batches because of pan size and heat distribution.
Cultural Note
The orange colour of cha yen comes from added food colouring — original Thai tea was brown, but vendors started dyeing in the mid-twentieth century to differentiate iced tea from coffee in a glass. The double-pull pouring technique is shared with teh tarik in Malaysia and is partly performance, partly aeration. A glass of cha yen at a hot Bangkok intersection in April is an act of survival; a Thai dessert shop will pour it over crushed ice with a side of pandan jelly cubes for a more elaborate version.
