Steps
In a mixing bowl, whisk the egg yolk, sweetened condensed milk, sugar, and vanilla extract until the mixture is thick and frothy.
Brew your Vietnamese coffee and pour it into a cup, leaving some space at the top.
Carefully spoon the whipped egg mixture over the hot coffee.
Sprinkle cocoa powder on top for garnish (if desired).
Serve immediately and enjoy your creamy Vietnamese Egg Coffee!