How to Make Vietnamese Iced Coffee

Brew a concentrate, then control the dilution

Vietnamese iced coffee begins with strong hot coffee—often from a phin—combined with ice and, for a milk version, sweetened condensed milk. Measuring all three makes the final strength and sweetness repeatable.

Start with 18 grams of coffee and 120 grams of brew water. Add condensed milk to taste, or leave it out for black iced coffee.

Set up the glass

For a milk drink, spoon a measured amount of sweetened condensed milk into a heat-safe brewing cup. Place the clean, preheated phin above it and follow the basic phin method. Count bloom water within the 120-gram total.

For black iced coffee, brew into an empty heat-safe cup. Do not brew directly into a fragile glass packed with ice unless the vessel is designed for the temperature change.

Stir before the ice

When dripping finishes, remove the hot phin safely and set it on its lid or another heat-safe surface. Stir the coffee thoroughly. For the milk version, scrape the bottom until no dense layer remains.

Taste a cooled spoonful. Add more condensed milk in small measured amounts if desired. The condensed-milk guide helps balance sweetness without burying the coffee.

Add measured ice

Fill a sturdy serving glass with a known amount of clean ice made from safe drinking water and pour the mixed coffee over it. Use a glass intended for the temperature change and pour slowly to limit splash. Stir until chilled. Larger pieces generally melt more slowly than crushed ice, but freezer temperature, glass, room heat, and stirring all matter.

If the first sip is too intense, wait for a little melting or add a measured splash of cold water. If it becomes watery almost immediately, use less ice, cool the coffee promptly in a clean covered container in the refrigerator, or brew a more concentrated ratio next time. Do not leave a dairy coffee on the counter to cool.

Use the phin ratio guide for clean arithmetic. Do not solve dilution by grinding extremely fine; that changes extraction and flow, not just concentration.

Keep ingredients and equipment safe

Use a stable heat-safe cup under the phin and handle hot metal carefully. Keep condensed milk according to its label, refrigerate opened product when directed, and use clean utensils. If serving someone with a milk allergy, condensed milk is not suitable; a nondairy drink requires a separately tested recipe and verified ingredients.

Caffeine content varies with the coffee and recipe. The FDA says caffeine sensitivity varies. If you are pregnant, trying to become pregnant, breastfeeding, or concerned about a medical condition or medication, its caffeine guidance says to talk with your health care provider about whether to limit caffeine.

Record the final formula

Write coffee, brew water, condensed milk, and ice as four separate numbers. Add one taste note after full chilling. On the next attempt, change only the component that caused the problem.

That record turns a successful result into a house recipe and makes differences between later cups easier to diagnose.

Brewing guidance is educational; ingredient labels, allergies, caffeine sensitivity, and food-safety needs vary. Use pasteurized eggs for uncooked egg drinks and consult an appropriate health professional about individual dietary concerns.

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