Soda sữa hột gà, also known as egg soda is a sweet drink made from egg yolk, sweetened condensed milk, and club soda. The beverage is of Vietnamese origin, though it is also consumed in Cambodia. There are variations of this drink, made with different eggs but most commonly used is a quail egg. Since club soda is acidic, adding this to the egg yolk will curdle the protein. The texture of the drink can be described like a custard.
It is often sold at Vietnamese supermarkets, or other Asian markets and comes in a can. It also can be found freshly made at some Vietnamese restaurants. The drink may also be called "Soda Egg Milk" in English at such restaurants.