Bia hơi, (hơi means gas, bia is from French bière, "beer"), is a type of draft beer popular in Vietnam.
Bia hơi is available throughout Vietnam. It is mostly to be found in small bars and on street corners. The beer is brewed daily and each bar gets a fresh batch delivered every day in plastic jugs. It is a very light (~3% alcohol) refreshing lager at a fraction of the cost of draft or bottled beer in the Western-style bars. Bia hơi production is informal and not monitored by any health agency. It is typically priced in the region of 5000vnd which is equivalent to 24 US cents per 12oz bottle, making it a fraction of the price of any western beer.
^J. Wills Burke Origines: the streets of Vietnam : a historical companion 2001 "It has since been closed, but still stands at the junction of Chợ Gạo, Nguyễn Siêu, and Ðào Duy Từ Streets, where it has recently been converted into a very fashionable bia hơi (draft beer) establishment."