Cambodian iced coffee vs Thai oliang
Two neighbouring iced coffees built on the same idea — roast something cheap in with the beans — that arrive at almost opposite drinks.
| Aspect | Cambodian iced coffee (kafe tuk doh ko) | Thai oliang |
|---|---|---|
| What goes into the roast | Vegetable fat or butter, soybean, corn, often chicory — and the fat is the unusual part | Corn, soybean, sesame, sometimes rice and cardamom. No fat |
| Filtration | A phin metal drip filter, or a cloth sock | A cloth sock (tung dtom kaffe) |
| Milk | Sweetened condensed milk in the glass before the coffee — structural, not optional | None in the classic form. Oliang is black; adding milk makes it a different order |
| Sweetening | Entirely from the condensed milk | Sugar dissolved into the brew |
| Body | Thick and mouth-coating, from the roast fat as much as from the milk | Lighter, and cleaner in the finish |
| Service | A tall glass, or a knotted plastic bag with a straw for carrying away | A tall glass over crushed ice, or the same plastic-bag service at street level |
| Caffeine | Robusta raises it, the grain in the roast lowers it, and the proportions are unpublished — so no figure | The same two effects, partly cancelling, and the same absence of a figure |
Which should you choose?
The shared insight is the interesting part and neither country appears to have taken it from the other: if coffee is expensive and the drink is going to be iced and sweetened anyway, roast something cheaper in with the beans and treat the result as one ingredient. Thailand reaches for grain and seed; Cambodia reaches for grain and fat. That single addition — fat in the roast — is what separates the cups, because it survives the ice and the milk and gives the Cambodian drink a weight that oliang does not have and is not trying to have. The other difference is milk: oliang is black by definition and Cambodian coffee is built on condensed milk from the bottom of the glass up. Order one expecting the other and the surprise will be immediate.