Rinse the coffee filter kit with hot water. Install the base and place the lid on top, as shown in the photo.
Put the chamber over the lid. Add the ground coffee into the chamber. Shake the chamber gently to flatten the coffee inside and press it with the damper. Add a little water to the lid under the chamber.
Gradually pour hot water into the chamber, making sure that the water covers the coffee evenly. Allow the coffee to soak up the water, then let it rest for 2 to 3 minutes.
Then, take the lid out and pour hot water into the chamber. The water should be at about ⅔ the capacity of the chamber maximum.
Let the coffee drip, which will take a couple of minutes. Once the dripping almost stops, firmly press down on the damper to extract all the remaining coffee.
Make the egg cream while waiting for the coffee to drip. Whip the egg yolk with honey, sugar, and a little egg white using a hand mixer for 5 to 7 minutes.
Whip untile until fluffy and soft peaks form.
To check if the cream has reached the right consistency, scoop out a small amount and place it in a cup of water. If the cream floats above the water, it's ready.
Pour the condensed milk into a glass, top it with a layer of coffee, and finish with the egg cream. The best cream-to-coffee ratio is 1:1.
If you want, you can pour a little more coffee over the cream.
Sprinkling some cinnamon powder, cocoa powder, or grated chocolate on top to enhance the drink's flavor and appearance.
Cà phê trứng is best served hot. To retain the drink's ideal temperature, you can put the glass into a bowl filled with warm water.