Vietnamese Iced Coffee

What makes Vietnamese iced coffee different?

The combination is concentrated coffee, thick sweetened milk and enough ice to chill and dilute it. Aim for a drink that remains distinctly coffee-led after stirring, with sweetness supporting the roasted flavour rather than hiding it.

A phin has a perforated brewing chamber, a support plate, an insert that rests on or screws down over the grounds, and a lid. Hot water passes through the coffee by gravity. It does not brew under espresso-machine pressure.

This recipe belongs to our coffee recipes collection. If you enjoy concentrated coffee prepared in a metal filter, Indian filter coffee offers a useful comparison, although its preparation and serving style are different.

Robusta, dark roast or both?

Robusta describes the coffee species; dark roast describes how the beans were roasted. They are not interchangeable terms.

For a familiar starting point, choose Vietnamese robusta or a Vietnamese robusta-arabica blend intended for phin brewing. A medium-dark or dark roast suits the condensed milk well. Dark-roasted arabica also works, particularly if that is what you already have, but it produces a different drink.

Begin with coffee ground for a phin if available. Otherwise, start with a sand-like grind, then adjust according to how your particular filter drains. There is no universal grinder setting that suits every phin.

Vietnamese iced coffee recipe

This is a home recipe adapted from published phin methods, not a claim that every Vietnamese household or café uses the same proportions.

Serves: 1
Preparation: about 2 minutes
Brewing: approximately 5 to 7 minutes
Total time: about 8 to 10 minutes

Ingredients

• 14 g ground coffee, preferably Vietnamese robusta or a robusta-arabica blend
• 100 g drinking water, approximately 100 ml before heating
• 25 g sweetened condensed milk
• 100 g ice, made from drinking water

The brewing ratio is 1:7.1 coffee to water by weight, before the condensed milk and ice are added. The coffee dose to condensed milk ratio is 1:1.8 by weight. These are starting proportions, not a standard.

Equipment

• Small single-serving phin
• Heatproof brewing glass or cup that supports the phin securely
• Separate serving glass
• Kettle
• Scales
• Spoon
• Timer
• Thermometer or temperature-controlled kettle, if available

Method

1. Prepare the milk and ice. Weigh 25 g condensed milk into the heatproof brewing glass. Put 100 g ice in the separate serving glass.

2. Load the phin. Set the support plate and brewing chamber over the milk. Add 14 g ground coffee and gently shake the chamber to level it.

3. Position the insert. Rest a gravity insert on the grounds. With a screw-down design, follow its instructions and avoid tightening it hard against the coffee.

4. Wet the grounds. Heat the measured brewing water to 92 to 94 degrees Celsius. Pour about 25 g over the insert and wait 30 to 45 seconds. This initial wetting is often called the bloom.

5. Add the remaining water. Pour in the remaining 75 g gently and put the lid on. If your phin cannot hold it all at once, add the rest as space becomes available.

6. Let it drip. Use roughly 5 to 7 minutes from the first pour as an initial guide, not a pass-or-fail test. Do not press the insert down to hurry the brew.

7. Mix while hot. Remove the phin carefully and stir the coffee into the condensed milk until no thick layer remains at the bottom.

8. Pour over ice. Transfer the mixture to the serving glass and stir. Taste after mixing, when some ice has melted, before deciding whether to change the next batch.

Approximate caffeine

Illustrative estimate: about 250 mg for an all-robusta serving, but this recipe has not been laboratory-tested.

The calculation assumes 14 g coffee × 24 mg caffeine per gram × 75% recovery into the drink = 252 mg. The assumed bean content falls within published laboratory findings for Vietnamese robusta; the recovery percentage is an illustrative modelling assumption, not a verified phin measurement. Actual caffeine may be substantially lower or higher, so do not use this estimate to manage a strict caffeine limit.

The NHS advises no more than 200 mg caffeine a day from all sources during pregnancy. Individual sensitivity varies; choose decaffeinated coffee if appropriate and speak to a GP, pharmacist or midwife about personal concerns.

Balance the condensed milk and ice

For your next glass, try 15 g condensed milk for a less sweet version or 35 g for a sweeter, milkier one, keeping the other ingredients unchanged. These are suggested adjustments, not fixed traditional ratios.

Always judge sweetness after stirring over ice. Condensed milk left at the bottom makes the first mouthful taste too harsh and the last mouthful excessively sweet.

Ice is part of the recipe rather than decoration. Some melting is intended, which is why the coffee starts concentrated. Keep the ice quantity consistent while adjusting the coffee or milk, otherwise several variables change together.

Troubleshooting the phin

Change one thing at a time and record the coffee dose, water quantity and grind setting.

Timing is a diagnostic clue, not the goal itself. Published phin recipes differ in their expected dripping times, so flavour and repeatability matter more than matching a stopwatch exactly.

Variations to try

• Black iced coffee: omit the condensed milk for cà phê đá. Taste before adding any other sweetener.
• Hot milk coffee: leave out the ice and serve the stirred coffee and condensed milk hot, known as cà phê sữa nóng.
• Milk-forward version: keep the coffee recipe unchanged and try adding 50 ml cold milk after stirring in the condensed milk. This is a suggested home adaptation rather than a definitive bạc xỉu recipe.
• Dairy-free adaptation: try a sweetened condensed coconut or oat product. Start with the same weight, then adjust to taste and follow its storage instructions.
• Egg coffee: use the separate Vietnamese egg coffee recipe rather than simply adding an egg to this drink.