An egg coffee is a Vietnamese drink traditionally prepared with egg yolks, sugar, condensed milk and robusta coffee. The drink is made by beating egg yolks with sugar and condensed milk, then extracting the coffee into the half of the cup, followed by a similar amount of "egg cream" — egg yolks which are heated and beaten, or whisked.
The drink is served in cafes throughout Vietnam, though it originates in Hanoi. The Giang Café (Vietnamese: Cà Phê Giảng) in Hanoi is known for serving the drink, which it makes with chicken egg yolk, coffee powder, condensed milk, and, optionally, cheese. The cup is sometimes served inside a bowl of hot water or set upon a small candle to retain its temperature. The son of the café's founder Nguyen Giang claims that his father developed the recipe for the drink when milk was scarce in Vietnam in the late 1940s, replacing milk with egg yolk.