How to Brew Coffee with a Vietnamese Drip Filter

If you’ve tried just about every pour-over, French press, and AeroPress under the sun, it might be time to revisit a simpler, more portable brewer: the Vietnamese drip filter, or phin. It’s compact, doesn’t need electricity, and makes a clean, gravity-fed cup—perfect for travel, the office, or just switching up your routine.

To make coffee with a Vietnamese drip filter, use around 1.5 scoops of medium-fine ground coffee, pour 90°C water in two stages, let it bloom for 15–20 seconds, then wait 2–3 minutes for the full brew to drip through. That’s it—no pumps, no paper filters, just hot water and gravity.

What Is a Vietnamese Drip Filter?

The Vietnamese drip filter, commonly called a phin (pronounced ‘fin’), is a small metal coffee brewer that works purely through gravity. It consists of a base, a brewing chamber, a perforated filter plate, and a lid. Hot water is poured over ground coffee in the upper chamber, drips slowly through the grounds, and collects in a cup or glass below. It’s often associated with sweetened condensed milk, but it’s just as effective for black coffee.

Why Use a Vietnamese Drip Filter?

The phin is ideal for making a single cup of coffee without any fuss. It’s portable, requires no electricity, and delivers a clean, light-bodied cup thanks to its simple drip mechanism. While traditional Vietnamese coffee often uses strong Robusta beans and sweetened condensed milk, the phin can brew any coffee you like—light, dark, single origin, or blend. It’s also a great way to slow down and enjoy the brewing process.

What Kind of Coffee Should You Use?

Traditionally, Vietnamese coffee is made with low-grade Robusta beans, which are bitter and strong. But there’s no rule saying you have to follow tradition. The author prefers using their own Italian roast beans—likely a medium or dark roast single origin or blend—and doses 1.5 scoops (more than you’d use for a stronger brew) to compensate for the phin’s naturally lighter extraction. You can use any beans you like, but medium to dark roasts tend to work best with the typical brew time and temperature.

How to Adjust Strength and Flavor

The strength of your brew depends largely on two factors: how tightly you screw down the filter lid, and how much coffee you use. A tighter lid slows the drip, increasing contact time and producing a stronger cup. Using more coffee—like 1.5 scoops instead of one—also boosts extraction and body. If you prefer a milder cup, use less coffee or leave the lid a bit looser. Avoid over-tightening, which can stall the brew entirely.

Do You Need Sweetened Condensed Milk?

No—you don’t. While sweetened condensed milk is a classic pairing in Vietnam (due to historical availability and taste preferences), it’s entirely optional. The author prefers a non-dairy creamer to avoid excessive sweetness. You can brew black coffee, add milk, sugar, or your favorite alternative. The phin is versatile enough to handle any coffee style.

Step-by-Step: Brewing With a Vietnamese Drip Filter

What You’ll Need:

• Vietnamese drip filter (phin)
• Coffee cup or glass
• Medium-fine ground coffee (about 1.5 scoops / ~15g)
• Hot water (around 90°C / 194°F)
• Optional: creamer, milk, or sweetener

Step 1: Assemble the Filter

Place the phin on top of your cup. Add 1.5 scoops of medium-fine ground coffee into the brewing chamber. Screw on the filter lid gently—how tight you make it affects brew speed and strength.

Step 2: Bloom the Coffee

Pour a small amount of hot water (just enough to wet the grounds, no more than 20–30ml) over the coffee. Let it bloom for 15–20 seconds. This step helps release gases and improves extraction.

Step 3: Add the Rest of the Water

Slowly pour hot water (around 90°C) into the chamber until the coffee is just covered. Do not exceed the capacity or the water will overflow. Replace the lid.

Step 4: Wait for the Drip

The coffee will begin to drip through the bottom. Total brew time is typically around 2–3 minutes. Do not remove the lid or agitate the filter. Let it finish dripping naturally.

Step 5: Serve

Once the dripping stops, your coffee is ready. Remove the phin, stir if needed, and enjoy black or with your preferred additions. The total brew volume will depend on how much water you added, but it’s usually around one standard cup.

Common Mistakes to Avoid

• Using boiling water (over 93°C / 200°F), which can scorch the grounds and produce bitterness.
• Overtightening the filter lid, which can stop the brew entirely.
• Underdosing coffee, which leads to weak or thin extractions.
• Rushing the bloom or pour, which affects even saturation and extraction.
• Not waiting for the full drip—removing the phin early leads to underextracted coffee.

FAQ

What is a Vietnamese drip filter (phin)?

A Vietnamese drip filter, or phin, is a small metal single-cup brewer that uses gravity to drip hot water through coffee grounds. It has a brewing chamber, filter plate, and lid, and produces a clean, unpressurized cup without paper filters.

What kind of coffee beans work best in a phin?

Medium to dark roast beans work well, though you can use any coffee you like. Traditionally, Robusta is used, but Arabica or blends also brew nicely in a phin. The author uses Italian roast beans for a smoother profile.

How much coffee should I use in a Vietnamese drip filter?

About 1.5 scoops (roughly 15g) is recommended to compensate for the lighter extraction compared to other brewers. You can adjust up or down based on your taste preference.

What water temperature should I use?

Use water around 90°C (194°F). Avoid boiling water (100°C / 212°F), which can over-extract and cause bitterness.

How long does it take to brew coffee with a phin?

Total brew time is usually 2–3 minutes, including the 15–20 second bloom. The drip speed depends on how tightly the lid is screwed and the grind size.

Do I have to use sweetened condensed milk?

No. While it’s traditional, you can brew your coffee black, or add milk, creamer, or sweetener of your choice. Many drinkers prefer non-dairy alternatives or skip sweeteners altogether.

Recommended FrontStreet Coffee for Vietnamese Drip

For a Vietnamese drip filter, try FrontStreet Coffee’s Classic Blend for a balanced and approachable cup, or their Yirgacheffe for brighter fruit notes that shine through the mild filtration. The Black Cocoa Blend also works well if you prefer a richer, bolder profile. All three roasts are suited to the phin’s gentle extraction and can be enjoyed black or with milk. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.