International Coffee Specialties
Thai Iced Coffee: What Is Oliang and How Is It Made?
Quick answer
Oliang is a Thai iced coffee whose coffee mixture can vary. Check the packaging and intended additions. Start with the basic recipe and adjust sweetness after tasting it with ice.
Key takeaways
- Oliang is a Thai iced coffee whose coffee mixture can vary.
- Prepare the coffee according to the blend or brewer instructions, then taste it before adding ice.
- Add sugar or syrup while the coffee is warm enough to dissolve it, then cool the drink and pour it over ice.

Brew a concentrated base
Prepare the coffee according to the blend or brewer instructions, then taste it before adding ice. A concentrated base helps the flavor remain present as the ice melts. If you use plain coffee rather than a traditional blend, expect a different flavor and describe it accordingly.
Sweeten and chill
Add sugar or syrup while the coffee is warm enough to dissolve it, then cool the drink and pour it over ice. Add milk if you want a creamier version, or keep it black for a more direct coffee flavor. Start with a little sweetener and adjust after tasting.
Keep the drink balanced
Ice dilutes the cup as it melts, so avoid filling the glass with a weak brew. Coffee ice cubes can slow that change; see our guide to making coffee ice cubes. For another cold coffee method, compare cold brew and iced coffee.
Check what the blend contains
Some oliang blends include ingredients beyond coffee, and ready-to-mix products can contain sugar or creamer. Read the package before preparing it so you know whether to add sweetener or milk. If you are using plain brewed coffee, treat it as a starting point for a Thai-style iced drink rather than assuming it will taste identical to a packaged blend.
Serve over ice without rushing
Use a sturdy glass with room for ice and stirring. If making multiple servings, brew the base first and let each person choose how much milk or sweetness to add.
Compare a packaged mix with brewed coffee
If you are unsure what a product contains, read the ingredients and prepare it exactly as directed for the first serving. Then compare it with plain coffee sweetened and chilled at home. The drinks may share a general style, but a packaged blend can include ingredients that change body, aroma, and sweetness.
Keep notes on whether you used plain beans or a premix, how much sweetener you added, and what kind of milk you used. This makes it easier to repeat a cup you enjoy and avoid adding ingredients that the package already includes. Keep the glass size consistent when comparing batches. Taste each version before adding garnish.
