An egg coffee (Vietnamese: Cà phê trứng) is a Vietnamese drink
traditionally prepared with egg yolks, sugar, condensed milk and robusta
coffee.
The drink originated in Hanoi in 1946, when the First Indochina War
caused a milk shortage in the city. A resourceful bartender at the
Sofitel Legend Metropole Hotel used some whisked egg as a substitute,
and the result was a success.
It’s similar to regular Vietnamese coffee, which has a layer of
sweetened condensed milk at the bottom, but instead it’s topped with a
mixture of whipped egg yolks and sugar or sweetened condensed milk,
which winds up tasting almost like meringue.
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