How to Brew Vietnamese Phin Coffee: Step-by-Step Guide

Brewing with a Vietnamese phin filter is one of the most rewarding manual coffee experiences you can have at home. It requires no electricity, no paper filters, and no expensive equipment — just ground coffee, hot water, and four minutes of patience. The result is a concentrated, intensely flavored cup that forms the foundation of Vietnam's most beloved coffee drinks.

This guide covers everything you need to know to brew perfect phin coffee every time: grind size, water temperature, coffee-to-water ratio, bloom technique, and how to serve it the traditional way.

What You Need

• Vietnamese phin filter — available at Hanoi Drip, Asian grocery stores, or online. Standard size is 6–8 oz.
• Vietnamese dark-roast coffee — medium-coarse grind. We recommend Hanoi Hustle (100% Robusta) for the most traditional result.
• Hot water — 92–96°C (just off the boil). Do not use boiling water.
• A cup or glass — the phin sits directly on top, so use a cup with a rim diameter smaller than the phin base.
• Sweetened condensed milk (optional, for cà phê sữa đá)

The Right Grind Size

Grind size is the single most important variable in phin brewing. The phin uses a medium-coarse grind — similar to coarse sea salt, or slightly finer than French press grind. Too fine and the water will drip too slowly or not at all; too coarse and the coffee will be weak and watery.

If you are buying pre-ground coffee, look for bags labelled "phin grind" or "Vietnamese drip grind." Hanoi Drip's whole bean blends can be ground to the correct size at any of our locations.

Coffee-to-Water Ratio

The standard phin ratio is 2 tablespoons (14g) of ground coffee to 60–80 ml of hot water per serving. This produces a concentrated brew of approximately 40–50 ml — similar in strength to a double espresso. If you prefer a milder cup, increase the water to 100 ml.

Step-by-Step Brewing Instructions

Step 1: Preheat the Phin and Cup

Pour a small amount of hot water through the empty phin filter and into your cup. Discard this water. Preheating prevents the phin from absorbing heat from your brew water, which can lower extraction temperature and produce a weaker cup.

Step 2: Add Condensed Milk (Optional)

If making cà phê sữa đá, add 1–2 tablespoons of sweetened condensed milk to the bottom of your glass before brewing. The hot coffee will drip directly onto the condensed milk, partially dissolving it.

Step 3: Add Ground Coffee

Place the phin base plate on top of your cup. Add 2 tablespoons of ground coffee to the brewing chamber. Gently shake the phin to level the grounds — do not tamp or compress them at this stage.

Step 4: Place the Gravity Press

Place the gravity press (the perforated disc) on top of the grounds. Press down gently with your fingertip — just enough to make contact with the grounds, not to compress them. The press should sit level and flat.

Step 5: The Bloom

Pour approximately 10–15 ml of hot water (about 2 teaspoons) over the press. Wait 30 seconds. You will see small bubbles forming — this is CO2 releasing from the freshly ground coffee, a sign of freshness. This bloom step improves extraction by allowing the grounds to degas before the main pour.

Step 6: The Main Pour

Slowly pour the remaining hot water (50–70 ml) over the press in a circular motion. Place the lid on top of the phin to retain heat. The coffee will begin dripping immediately.

Step 7: Wait

Allow the coffee to drip for 4 to 6 minutes. Do not rush this step. The slow drip is what gives phin coffee its distinctive concentrated character. A full drip in under 3 minutes indicates the grind is too coarse; a drip taking more than 8 minutes indicates the grind is too fine.

Step 8: Serve

Once the dripping has stopped, remove the phin from the cup. Stir the condensed milk (if using) into the coffee. Serve hot, or pour over ice for cà phê sữa đá.

Troubleshooting Common Problems

Coffee drips too slowly (or not at all)

The grind is too fine, or the gravity press has been pressed too firmly. Try a coarser grind or a lighter press next time. If the phin is completely clogged, remove the press, stir the grounds gently, and replace with a lighter press.

Coffee tastes weak or watery

The grind is too coarse, or you are using too little coffee. Try a finer grind, increase the coffee dose to 3 tablespoons, or reduce the water to 50 ml for a more concentrated brew.

Coffee tastes bitter

The water is too hot (above 96°C) or the grind is too fine, causing over-extraction. Let the water cool for 30 seconds after boiling before pouring, and try a slightly coarser grind.

Serving Suggestions

Cà Phê Sữa Đá (Vietnamese Iced Coffee)

The classic. Add 1–2 tablespoons of condensed milk to a tall glass, brew the phin on top, stir, and pour over a full glass of ice. Add more condensed milk to taste.

Cà Phê Đen Đá (Black Iced Coffee)

Brew the phin without condensed milk and pour directly over ice. Add a pinch of salt to reduce bitterness and enhance the natural sweetness of the Robusta beans.

Cà Phê Trứng (Egg Coffee)

Brew the phin, then top with whipped egg yolk foam. See our full Vietnamese egg coffee recipe for detailed instructions.

Where to Get Phin Coffee and Supplies in Vancouver

Hanoi Drip carries all three of our signature blends in whole bean and ground formats, along with traditional phin filters, at our three Vancouver locations. We also offer wholesale supply for cafes, restaurants, and offices.