This is delicious hot or iced. If you do not have a Vietnamese coffee filter, or phin, make Café Bombón, a similar drink popular in Spain, by pouring the condensed milk into a small tumbler and adding 2 ounces brewed espresso on top. You can also make this in quantity with a French press. Prepare a small cup of strong coffee per person and pour over the condensed milk in individual cups.

Add to a glass tumbler:

Place a Vietnamese coffee filter over the tumbler and add to the filter:

Pour over the grounds to moisten:

Place the top filter over them and press or screw down lightly. Fill the filter with hot, not boiling water (200° to 205°F) and cover with the metal lid. Allow the coffee to drip into the glass. This should take 3 to 5 minutes (if it is faster than 3 minutes, either the coffee is too coarse or the filter is not pressed tight enough; if it is slower than 5 minutes, either the coffee is too fine or the filter is pressed too tight). Serve hot with a small spoon for stirring the dark and white layers together. To serve cold, stir the condensed milk into the coffee and pour into a glass filled with ice.