Thai Coffee Guide: From Oliang to Third-Wave Specialty

Thailand's coffee story has two parallel tracks. The traditional track: oliang (โอเลี้ยง) — Thai-style iced black coffee, made from a blend of dark-roasted robusta coffee mixed with corn, soy, or sesame seeds, brewed through a cloth filter and served over ice with condensed milk; available at virtually every Thai breakfast stall for ฿20–40. Cha yen (ชาเย็น) is technically tea but functions similarly — strongly brewed orange-tinted tea with condensed milk over ice. Café yen (กาแฟเย็น) is sweetened condensed milk iced coffee from the same stalls. The modern track: Thailand's own arabica coffee industry, concentrated in Chiang Rai, Chiang Mai, and Doi Chang/Doi Tung highland farms, produces exceptional single-origin beans increasingly used by specialty cafés worldwide. The Third Wave coffee scene in Bangkok (Roots, Brave Roasters, Phil Coffee) and Chiang Mai (Ristr8to, Graph, Akha Ama) rivals the best cafés in Tokyo or Melbourne — beautiful pour-overs, excellent espresso, and sourced from Thai highland farms. Thai 'pink milk' (nom yen, นมเย็น) — strawberry-flavoured milk over ice — is not coffee but a childhood staple found at the same stalls. For visitors: start your mornings with oliang from a street stall (it is outstanding), then graduate to specialty Thai arabica at an afternoon café. The contrast illustrates Thailand's remarkable culinary range perfectly.