Place the cup spanner of the phin filter over your brewing glass. Add ground coffee to the filter chamber, try to spread them evenly inside the chamber. Then gently place the filter chamber over the cup spanner.
Place the filter press on top of the ground coffee inside the chamber and press gently. Add 1 tablespoon of hot water to the chamber and wait for about 20-30 seconds to let the coffee bloom.
Add the remaining hot water and cover the chamber with the filter cap. Wait for the coffee liquid to drip through the holes at the bottom of the filter chamber and cup spanner.
Total brewing time should be around 4 minutes. If the coffee drips too quickly, press the filter press a little more to slow it down. There should be 1-2 drops at a time. Once the filter chamber is empty, remove the filter from the glass.
In a small saucepan, add coconut milk and sweetened condensed milk. Stir and warm the milk mixture over medium-low to medium heat until steams start to come out and small bubbles start to appear around the edge. Do not let the mixture boil. Turn off the stove and pour milk mixture into your serving cup.
Froth the coffee by using an electric frother or shake it vigorously in a jar with a secured lid (optional step but strongly recommended).
½Pour both the coffee and all the foams over the coconut milk mixture in the serving cup. Serve immediately.