How to Brew Coffee with a Vietnamese Drip Filter

If you’ve ever traveled or worked remotely and wished you could brew a decent cup without hauling a machine, a small metal drip cone might be your simplest solution. The Vietnamese coffee dripper—also known as a phin—is compact, gravity-fed, and doesn’t need electricity or paper filters. But does such a basic tool actually make drinkable coffee? Yes, and here’s exactly how.

The Vietnamese coffee dripper uses a straightforward drip method: hot water filters through ground coffee by gravity alone. With the right grind, around 1.5 tablespoons of medium-fine coffee, 90°C water, and a 2–3 minute brew time, you’ll get a cup comparable to a mild Americano—though weaker than espresso. Adjust the lid to control flow rate and strength.

What Is a Vietnamese Coffee Dripper?

The Vietnamese coffee dripper, or phin, is a small metal single-serve brewer consisting of a chamber, a perforated plate, and a drip spout. It works purely through gravity—no pressure, no pump. You add hot water to ground coffee in the top, the liquid drips slowly through, and collects in a cup below. It’s portable, requires no paper filters, and is often used with sweetened condensed milk, though alternatives work fine.

How the Dripper Actually Works: Gravity & Drip Speed

The fundamental brew mechanism is basic drip filtration. Hot water (ideally around 90°C) is poured over medium-fine coffee grounds packed in the upper chamber. Gravity pulls the water down through the coffee bed and a perforated metal filter, extracting soluble compounds along the way. The drip speed is influenced by how tightly you screw the top filter plate—the looser it is, the slower the brew and the stronger the cup. This simple setup makes it ideal for offices, travel, or situations where you want a no-fuss single cup.

Step-by-Step: Brewing with a Vietnamese Dripper

Here’s the exact method used in the original test, with numbers and timings preserved:

• Coffee: Use about 1.5 tablespoons (approximate dose) of medium or medium-fine ground coffee. The author used Italian roasted beans instead of traditional Vietnamese Robusta for a smoother profile.
• Grind Size: Medium-fine—similar to table salt. Not espresso fine, but finer than standard drip.
• Dose: 1.5 scoops (approximate); more than usual for drip due to the lighter extraction.
• Water Temperature: Around 90°C—do not use boiling water (100°C+) as it can scorch the grounds.
• Bloom (Optional): Add just enough hot water to wet the coffee grounds, then wait 15–20 seconds. This step isn’t always done but helps with even extraction.
• Brew: Slowly pour water until the chamber is full. Do not rush; let it drip naturally.
• Drip Time: Total brew time is around 2–3 minutes, depending on how tightly the top is screwed.
• Result: Coffee collects in your cup drop by drop through the bottom hole. Wait until all the water has dripped through before drinking.

Sweetening Your Cup: Traditional & Modern Takes

Traditional Vietnamese coffee is often served with sweetened condensed milk to balance the bitterness of lower-quality Robusta beans. But if you prefer something less sweet, as the author does, you can use non-dairy creamer or ordinary milk instead. The choice of sweetener significantly changes the flavour profile, so adjust to taste.

Common Mistakes to Avoid

• Using boiling water (over 93°C): It will over-extract and burn the grounds, leading to bitterness.
• Over-tightening the filter: This can slow the brew too much or even stop it, making the coffee overly strong and bitter.
• Under-dosing: Since the extraction is lighter than espresso or French press, using too little coffee will result in a very weak cup.
• Rushing the pour: Pouring too quickly or unevenly can lead to channeling and uneven extraction.

Why This Method Works Even with Lighter Roasts

Though originally designed for strong, dark Robusta, the Vietnamese dripper adapts well to medium roasts too. The gravity-based extraction is forgiving, and while the resulting cup is milder than espresso, it works nicely with high-quality beans. In the test, a medium-roast Italian blend produced a balanced, drinkable cup with a clean finish—proof that you don’t need dark roast or Robusta to get a decent result.

Frequently Asked Questions

What kind of coffee grind should I use for a Vietnamese coffee dripper?

Use a medium-fine grind, similar to table salt. It should be finer than standard drip coffee but not as fine as espresso. This grind size works well with the gravity drip and metal filter to produce a balanced extraction in 2–3 minutes.

Can I use any type of coffee bean in a Vietnamese dripper?

Yes. While traditional Vietnamese coffee uses Robusta, you can use any roast or origin. The author used a medium-roast Italian blend and still achieved good results. The brew method is flexible enough to highlight different beans, though lighter roasts may taste more delicate.

What temperature should the water be?

Use water around 90°C. Avoid boiling water (100°C or higher) as it can scorch the coffee grounds, leading to over-extraction and bitterness. Let boiled water cool slightly before pouring.

How do I adjust the strength of the coffee?

The strength is controlled by two factors: the tightness of the top filter screw and the coffee dose. Screwing the filter down tighter slows the drip and results in a stronger brew. Using more coffee (e.g. 1.5 tablespoons instead of 1) also increases strength, especially in a lighter extraction system like this one.

Do I need to bloom the coffee first?

Blooming (adding a small amount of water to let the coffee degas) is optional for this method. The original test included a 15–20 second bloom with just enough water to wet the grounds, but many users skip this step without issue. Blooming can help with even extraction if you’re using freshly roasted beans.

What can I use instead of sweetened condensed milk?

You can substitute with non-dairy creamer, regular milk, or plant-based alternatives. The original recipe uses sweetened condensed milk for tradition and to offset bitterness, but the author prefers a milder non-dairy creamer for a less sweet cup.

Recommended FrontStreet Beans for Drip Brewing

For use with a Vietnamese dripper or similar drip setup, try FrontStreet Coffee’s Japanase-style Ethiopia Huakui , which highlights bright tropical fruit and floral notes, or the PWN Golden Mandheling for a heavier body with rich caramel and nutty tones. Both work well with medium-fine grind and drip methods. For a fruit-forward option, the Colombia Sidra (Sidra) brings grape and stone fruit complexity. All three beans are freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.