Oliang or Oleng commonly known as Thai iced coffee, is an iced coffee

Iced coffee

Iced coffee is a cold variant of the beverage coffee.-Preparation:There are several ways of preparing iced coffee. Ordinary hot-brewed coffee can be served cold, although this may result in a bitter-tasting product. Cold brewing relies on time, rather than heat, to transfer the coffee flavor to the...

 drink which blends the coffee together with soybean

Soybean

The soybean or soya bean is a species of legume native to East Asia, widely grown for its edible bean which has numerous uses...

s, corn

Maize

Maize known in many English-speaking countries as corn or mielie/mealie, is a grain domesticated by indigenous peoples in Mesoamerica in prehistoric times. The leafy stalk produces ears which contain seeds called kernels. Though technically a grain, maize kernels are used in cooking as a vegetable...

, sesame seeds, and other additives. It is traditionally brewed using a thung tom kafae, a cloth bag attached to a metal ring. The name is derived from the Teochew dialect, the language spoken by the majority of the Thai Chinese

Thai Chinese

The Thai Chinese are an overseas Chinese community who live in Thailand. Thailand is home to the largest, oldest, most prominent, and most integrated overseas Chinese community in the world with a population of approximately 9.5 million people...

, where O means "black" and Liang means "cold".

Oliang is sometimes served with condensed milk

Condensed milk

Condensed milk, also known as sweetened condensed milk, is cow's milk from which water has been removed and to which sugar has been added, yielding a very thick, sweet product which when canned can last for years without refrigeration if unopened. The two terms, condensed milk and sweetened...

, or with a small pitcher of evaporated milk

Evaporated milk

Evaporated milk, also known as dehydrated milk, is a shelf-stable canned milk product with about 60% of the water removed from fresh milk. It differs from sweetened condensed milk, which contains added sugar. Sweetened condensed milk requires less processing since the added sugar inhibits ...

, and one of simple syrup with which the drinker can sweeten the oliang to their taste.

Powdered premixed oliang is available online and at some Asian grocery suppliers.