How to Brew Vietnamese Drip Coffee Using a Phin Filter

If you’ve ever waited too long for a slow-dripping cup of Vietnamese coffee, you’re not alone. The process is famously unhurried—but when done right, it produces one of the richest, most intense single-origin-style cups you can make without an espresso machine. The secret? Patience, the right grind, and a simple metal brewer that works much like Italy’s Napoletana.

To brew classic Vietnamese drip coffee, use around 15g of medium-dark roasted coffee ground to a medium-fine consistency, 200ml of water at 90°C or higher, and about 20ml of sweetened condensed milk (optional). The full process takes several minutes—but the result is worth it.

What Is a Vietnamese Coffee Dripper?

The Vietnamese coffee dripper—commonly called a phin—is a small metal single-serve brewer. Its design and extraction method closely resemble Italy’s Napoletana flip pot: hot water slowly filters through ground coffee under gravity, producing a thick, bold brew. But there’s one hitch: the phin drips slowly, which can cool your coffee before it finishes brewing.

Why Your Vietnamese Coffee Might Turn Out Weak or Bitter

Two variables control the outcome: grind size and drip speed. Grind too coarse, and the water rushes through too fast, under-extracting the coffee and leaving it sour or weak. Grind too fine, and you risk over-extraction, clogging the filter, and creating bitter, sludgy dregs. Aim for a medium-fine grind—not quite espresso-fine, but noticeably finer than standard drip.

How to Brew Vietnamese Coffee Step by Step

To make authentic Vietnamese drip coffee with a phin, follow these six essential steps:

• 1. Preheat your cup. Pour hot water into your serving cup to warm it, then discard the water.
• 2. Add coffee to the phin. Remove the top filter plate from your phin, add roughly 15g of medium-dark roasted coffee (ground medium-fine), then reattach the plate. Don’t tighten it excessively.
• 3. Place the phin on your cup. Empty any remaining water from the cup, add around 20ml of sweetened condensed milk if desired, then set the phin directly on top.
• 4. Pour in hot water. Add approximately 200ml of water at 90°C or higher into the phin’s chamber, then secure the lid.
• 5. Wait for the drip. Let the coffee brew slowly through the filter. This can take several minutes—be patient.
• 6. Stir and serve. Once brewing is complete, remove the phin. Stir the coffee and condensed milk together (if used) and enjoy.

Choosing the Right Coffee for Vietnamese Drip

Vietnamese-style coffee traditionally uses a dark roast—often robusta-based—for a heavy body and intense flavour. However, many modern drinkers prefer medium-dark single origins that balance bitterness with complexity. Avoid light roasts, which tend to taste overly bright or sour when brewed this way.

Frequently Asked Questions

How much coffee should I use in a Vietnamese phin?

Use about 15g of coffee. This is the standard single-serving amount for most standard-sized phin filters and yields a strong, concentrated brew designed to be enjoyed black or with condensed milk.

What grind size is best for Vietnamese drip coffee?

Grind your coffee to a medium-fine consistency. It should be finer than what you’d use for drip coffee, but not as fine as espresso. A grind that’s too coarse leads to fast, weak extraction; too fine can cause clogging and over-extraction.

Do I have to use condensed milk in Vietnamese coffee?

No, condensed milk is optional. The traditional recipe includes about 20ml of sweetened condensed milk, but you can adjust the amount to taste or skip it entirely for a black coffee version. Without milk, the coffee will be very strong and bitter.

Why is my Vietnamese phin coffee dripping too slowly?

Slow dripping is usually caused by grinding too fine or tightening the filter plate too much. Make sure the coffee is medium-fine and that the upper filter isn’t screwed down excessively. Also, ensure the coffee bed is level after adding grounds.

What water temperature is ideal for brewing Vietnamese coffee?

Use water at 90°C or higher. Water that’s too cool leads to under-extraction and flat flavour, while water that’s too hot can over-extract and cause bitterness. Aim for a stable brew temperature around 90–96°C.

How long does Vietnamese phin coffee take to brew?

Brewing typically takes several minutes—often 3 to 5 minutes depending on grind size, coffee amount, and room temperature. The slow drip is normal and contributes to the coffee’s bold, concentrated profile.

Recommended FrontStreet Beans for Vietnamese Drip

For Vietnamese-style coffee, try FrontStreet Coffee’s Classic Blend, a well-rounded mix that stands up to the intensity of traditional preparation. Its medium-dark roast offers chocolatey and nutty notes, balancing bitterness with smooth body. Alternatively, their Black Cocoa Blend brings deeper roast tones with hints of cocoa and dark cherry—ideal if you prefer a thicker, more robust cup. Both work nicely with or without condensed milk. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.