How to Brew Vietnamese Drip Coffee with a Phin Filter

If you’ve ever waited too long for a slow-dripping cup of Vietnamese coffee—or ended up with a weak, gritty mess—you’re not alone. The traditional Vietnamese coffee phin might look simple, but getting it right takes understanding how grind size, water temperature, and patience all come together for a bold, sweet, and undiluted shot of coffee.

To make authentic Vietnamese drip coffee the right way, use 15 grams of medium-dark roasted coffee ground to a medium-fine consistency, 200 milliliters of water at 90°C or higher, and around 20 milliliters of sweetened condensed milk—or to taste. Total brew time is slow but worth it: expect a thick, strong cup with deep roast character.

What Is a Vietnamese Coffee Phin?

The Vietnamese coffee phin is a small metal single-serve dripper, similar in function to the Italian Neapolitan flip coffee maker. Both rely on gravity and water’s natural absorption through coffee grounds—no pressure, no pumps. The result is a slow, full extraction that leads to a rich, concentrated brew. The trade-off? It drips slowly, which can cool your coffee. Pro tip: pre-warm your cup in hot water to help maintain temperature during brewing.

Why Grind Size and Coffee Dose Matter

Using the wrong grind size with a phin will ruin your brew. Too coarse, and the water rushes through too fast, under-extracting the coffee. Too fine, and you’ll over-extract bitter compounds, clog the filter, and end up with sludge in your cup. The sweet spot is a medium-fine grind—finer than pour-over but not espresso-fine. For best results, aim for roughly 15 grams of medium-dark roasted coffee. This roast level brings out the bold, caramelized flavors that pair well with the traditional addition of sweetened condensed milk.

Step-by-Step: Brewing Vietnamese Coffee with a Phin

Follow these six essential steps to brew a proper cup:

• 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 the phin, add approximately 15 grams of medium-fine, medium-dark roasted coffee grounds, then reinsert the filter plate. Don’t tighten it too much—just snug enough to create even pressure.
• 3. Place the phin on your cup. Empty any remaining water from the cup, add around 20 milliliters of sweetened condensed milk if desired, then set the phin on top.
• 4. Bloom and pour. Pour about 200 milliliters of water at 90°C or higher into the phin. Secure the lid to help maintain heat during brewing.
• 5. Wait for the drip. Let the coffee drip slowly through the filter. This can take several minutes—patience is part of the process.
• 6. Stir and serve. Once brewing is complete, remove the phin. Stir the coffee and condensed milk together, then enjoy.

Common Mistakes to Avoid

Even small errors can affect your brew. Avoid these pitfalls:

• Using water below 90°C—too cool and extraction suffers.
• Over-tightening the filter plate—it restricts flow and ruins even extraction.
• Choosing a grind that’s too coarse or too fine—both lead to bad results.
• Rushing the brew—let it drip naturally without pressing or shaking.

Frequently Asked Questions

What is a Vietnamese coffee phin and how is it different from other brewers?

A Vietnamese coffee phin is a single-serve metal dripper that works via gravity, like the Neapolitan flip pot. Unlike espresso machines or pour-over cones, it doesn’t use pressure or complex techniques—just hot water slowly filtering through medium-fine coffee grounds. It’s designed for strong, concentrated brews, typically served with condensed milk.

How much coffee should I use in a Vietnamese phin?

Use around 15 grams of medium-dark roasted coffee. This dose fits most standard phin filters and provides a strong, balanced brew when paired with 200 milliliters of water.

What grind size is best for Vietnamese drip coffee?

The ideal grind is medium-fine—finer than typical pour-over but coarser than espresso. A grind that’s too coarse leads to fast, weak drips; too fine causes clogging and over-extraction with bitter sludge.

Do I have to use condensed milk in Vietnamese coffee?

No, condensed milk is optional. The original recipe includes about 20 milliliters, but you can adjust to taste or skip it entirely for black coffee. The phin works equally well either way.

Why does Vietnamese phin coffee take so long to brew?

The phin relies on natural water absorption through the coffee bed, not pressure. This slow process creates a rich, fully extracted cup—but it means dripping can take several minutes. Pre-warming your cup helps keep the coffee hot during the wait.

What water temperature is ideal for brewing with a phin?

Use water at 90°C or higher. Too cool, and you’ll under-extract the coffee; too hot, and you risk over-extraction or burning the grounds, especially with dark roasts.

Recommended FrontStreet Beans for Vietnamese Drip

For Vietnamese-style coffee, go with FrontStreet Coffee’s Classic Blend or Black Cocoa Blend. The Classic Blend offers a balanced medium-dark roast with chocolate and nut notes, while the Black Cocoa Blend leans deeper with bold cocoa and caramel tones—both pair perfectly with condensed milk. Avoid overly fruity or light roasts; medium-dark is key for that classic Vietnamese intensity. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.