Set up your Vietnamese coffee filter (phin) over a coffee mug or cup. Place the filter’s metal mesh on top of the coffee grounds.
Add Coffee Grounds:
Add 2 tablespoons of coarsely ground coffee to the filter. Use a spoon or the filter’s press to gently tamp down the coffee grounds to ensure even extraction.
Brew the Coffee:
Pour about 2 tablespoons of hot water (not boiling) over the coffee grounds to bloom them. Let it sit for about 30 seconds.
After blooming, slowly pour the remaining hot water over the coffee grounds. The coffee should start to drip through. Allow the coffee to drip slowly (about 5 minutes) until you have a strong brew.
Sweeten the Coffee:
Once the brewing is complete, remove the filter. Stir 1-2 tablespoons of sweetened condensed milk into the brewed coffee, adjusting the sweetness to your preference.
Cool the Coffee:
Let the coffee cool to room temperature. You can speed up this process by placing it in the refrigerator or adding a few ice cubes.
Serve:
Fill a glass with ice cubes. Pour the cooled coffee over the ice.