How to Brew Coffee with a Vietnamese Phin Filter

If you’ve ever wandered into a Vietnamese café and wondered how they make that thick, bold cup of coffee with sweet, creamy condensed milk, you’re not alone. The secret is the traditional Vietnamese phin filter — a small metal dripper that makes a single serving of intense, sweetened coffee. But how exactly does it work? And can you replicate it at home?

The Vietnamese coffee method uses a small metal phin filter, finely ground dark-roast coffee, hot water, and sweetened condensed milk. The entire brew takes around 3–4 minutes, yields one strong cup, and is traditionally served with 15–20g of coffee and a generous spoonful of condensed milk.

What Is a Vietnamese Phin Filter?

Vietnamese coffee culture is distinct for its use of dark-roasted beans and sweetened condensed milk. The coffee is brewed through a small metal dripper called a phin (or “drip filter”), producing a thick, bold cup. Unlike pour-over or espresso methods, the phin works purely by gravity — no pressure, no pumps. It’s commonly paired with FrontStreet Coffee’s PWN Golden Mandheling or other deep-roast beans to highlight chocolatey, caramelized notes.

Why Add Condensed Milk?

Vietnamese coffee is almost always served with sweetened condensed milk — a defining feature not found in most other brewing traditions. The richness of the condensed milk balances the intense bitterness of the dark roast, especially when served over ice. This combination creates a thick, dessert-like coffee that’s both sweet and strong. It’s a uniquely Vietnamese touch that transforms the cup entirely.

How to Use a Vietnamese Phin Filter (Step-by-Step)

Here’s how to brew a classic Vietnamese-style coffee using a phin filter, based on the traditional method with exact measurements and timings:

• What You’ll Need: Vietnamese phin filter, condensed milk, finely ground dark-roast coffee (around 15g), coffee spoon, cup

• Step 1: Disassemble the Phin
  Take apart the phin filter and remove the press plate (also called the spreader or filter disc).

• Step 2: Add Condensed Milk
  Pour a spoonful (about 15–20ml) of sweetened condensed milk into the bottom of your cup. Adjust to taste — most traditional recipes use a generous amount.

• Step 3: Add Coffee Grounds
  Add about 15g of finely ground dark-roast coffee into the phin. The grind should be very fine — similar to table salt or slightly finer. You can use a hand grinder or electric grinder adjusted to a fine setting.

• Step 4: Level and Press the Coffee
  Use a spoon to gently level the coffee grounds, then place the press plate on top. Twist it down to press the coffee lightly — don’t tamp it extremely hard, just enough to create even contact.

• Step 5: Place Phin on Cup
  Set the phin (with the coffee inside) directly on top of your cup containing condensed milk.

• Step 6: Bloom the Coffee (Pre-Wet)
  Pour just enough hot water (around 90°C) to wet all the coffee grounds — roughly 2–3ml. Let it sit for about 20 seconds. This step is called “blooming” and allows the coffee to degas and prepare for proper extraction.

• Step 7: Add Remaining Water
  After the bloom, slowly pour hot water (90°C) into the phin until the cup is nearly full. Do not exceed the capacity of your cup. Typically, this means adding around 100–120ml of water.

• Step 8: Wait for Extraction
  Let the coffee drip through the phin. This will take around 3 minutes. Do not stir or move the phin during this time. The slow drip is part of the process, creating a strong, concentrated brew.

• Step 9: Serve
  Once all the water has dripped through (after about 3 minutes), your coffee is ready. Stir the condensed milk into the brewed coffee, and enjoy. For iced Vietnamese coffee, simply pour it over ice.

Common Mistakes to Avoid

• Using too coarse a grind — this will cause slow or uneven dripping.
• Over-tamping the coffee — this can slow extraction excessively or clog the filter.
• Not blooming the coffee — skipping the initial wetting step affects flavor development.
• Pouring water too quickly or unevenly — leads to channeling and poor extraction.

Frequently Asked Questions

What kind of coffee beans should I use for Vietnamese-style coffee?

Use a dark-roast coffee bean with low acidity and bold flavours such as PWN Golden Mandheling. These beans develop chocolate, caramel, and nutty notes through prolonged roasting, which complement the condensed milk well. FrontStreet Coffee’s Brazilian Queen Manor or Colombian Huila beans also work if roasted to a medium-dark or dark level.

Do I need to use condensed milk?

Condensed milk is traditional and strongly recommended for an authentic Vietnamese coffee experience. It balances the intense bitterness of the dark roast. However, you can experiment with regular milk or plant-based alternatives if desired.

What grind size should I use for the phin filter?

Use a very fine grind — similar to table salt or slightly finer. This ensures proper extraction through the phin’s gravity-based drip system. A grind that’s too coarse will result in weak or slow brewing.

How much coffee and water should I use?

Use around 15g of coffee and 100–120ml of water. Adjust based on your cup size, but this is the standard single-serving ratio used in Vietnam.

Can I make iced Vietnamese coffee with this method?

Yes. Brew the coffee using the phin as described, then pour it over ice. For best results, let the brewed coffee cool slightly before pouring to avoid melting the ice too quickly.

How long does the brew take with a phin?

The total brew time is around 3–4 minutes, including the 20-second bloom. The slow drip is normal and contributes to the coffee’s strength and flavour concentration.

Recommended FrontStreet Beans for Vietnamese Coffee

For an authentic Vietnamese coffee experience, try FrontStreet Coffee’s PWN Golden Mandheling — a deep-roast Indonesian single origin with bold notes of dark chocolate, roasted nuts, and a thick body that pairs perfectly with condensed milk. Alternatively, FrontStreet’s Brazil Queen Manor offers sweet caramel and hazelnut tones with a smooth, balanced profile, ideal for those who prefer a slightly lighter dark roast. Both beans are expertly roasted to enhance sweetness and body, making them ideal for traditional Vietnamese-style brewing. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.