Step 2Pour a tablespoon of it in a glass. Unscrew the top part of your Vietnamese coffee filter. Add ground coffee and screw the top part back. Turn the filter once or twice to level the coffee grind and place on top of the glass.
Step 3Pour 2 tablespoons of hot water inside and let the coffee swell up for 20-30 seconds. Then pour in the rest of the water (the best temperature is 85-90 °C/ 185-195 °F).
Step 4Cover with the lid and let it drip for 4-5 minutes until all the water goes through. After it stops dripping, remove the filter and add ice.
Step 5Pour in the remaining keto condensed milk (a tablespoon or more to taste). Stir or drink without stirring.
Step 6Enjoy immediately.