What kind of coffee beans are used for Vietnamese coffee?

Traditional Vietnamese coffee uses dark-roasted robusta beans, often with a butter or chicory roast profile. Robusta has nearly double the caffeine content of arabica and produces a thick, heavy body with chocolatey, nutty, and slightly bitter notes that pair naturally with condensed milk. Trung Nguyen and Cafe Du Monde (chicory blend) are widely used. Arabica works but produces a lighter, more acidic result that lacks the traditional boldness.

How long should Vietnamese coffee drip through the phin?

A properly loaded phin filter should take 4-6 minutes to fully drip through. If the drip finishes in under 2 minutes, the grind is too coarse or the press plate is too loose. If it takes more than 8 minutes or stalls completely, the grind is too fine or the press plate is overtightened. The drip rate should be slow and steady, approximately one drop per second.

Can I make Vietnamese coffee without a phin filter?

Yes, though the result will differ. A French press with a very coarse grind and 4-minute steep produces a similar bold, full-bodied concentrate. A moka pot also works well with dark robusta beans. Pour the brewed concentrate over condensed milk and ice as normal. The phin filter is inexpensive and widely available online if you want the authentic slow-drip experience.

How to Make Vietnamese Coffee

Vietnamese coffee is brewed through a small stainless steel phin filter directly over a glass of sweetened condensed milk. The slow drip process extracts a concentrated, intensely bold brew from dark-roasted robusta beans that balances perfectly against the thick sweetness of the condensed milk.

What You Need

Vietnamese Phin Filter

A stainless steel phin filter consists of a brewing chamber, a press plate, and a lid. They come in single-serving sizes (6-8oz). Place it directly over your glass. Aluminium phins are cheaper but stainless steel retains heat better.

Dark Roast Robusta Beans

Use a coarse-to-medium grind of dark roasted robusta or a robusta-arabica blend. Vietnamese brands like Trung Nguyen are ideal. The grind should be slightly coarser than drip coffee to prevent clogging the phin.

Sweetened Condensed Milk

Sweetened condensed milk is essential, not evaporated milk or regular milk with sugar. Longevity and Eagle Brand are traditional choices. Use 2-3 tablespoons per serving depending on your sweetness preference.

Heat-Resistant Glass

A clear, heat-resistant glass lets you watch the coffee drip and see the layers form. For iced coffee (ca phe sua da), use a tall glass that can accommodate ice after brewing.

Step-by-Step Method

Add Condensed Milk to the Glass

Spoon 2-3 tablespoons of sweetened condensed milk into the bottom of your glass. The amount determines the final sweetness. For ca phe sua da (iced), use 2 tablespoons as the ice will dilute slightly. Do not stir yet.

Load the Phin Filter

Remove the press plate and add 2-3 tablespoons (15-20g) of coarsely ground dark roast coffee to the phin chamber. Level the grounds by gently shaking. Place the press plate on top and turn it clockwise with light pressure until snug. Do not overtighten or the drip will stall.

Bloom with Hot Water

Pour a small amount of boiling water (about 20ml) into the phin to wet the grounds and allow them to bloom for 20-30 seconds. This initial soak allows CO2 to escape and ensures even extraction. Place the lid on top to retain heat during the bloom.

Fill and Drip

Fill the phin to the top with boiling water (160-180ml) and replace the lid. The coffee should begin dripping slowly into the glass at a rate of roughly one drop per second. The entire drip should take 4-6 minutes. If it stalls, gently lift and reseat the press plate.

Stir, Ice, and Serve

Once the drip is complete, remove the phin and set it aside. Stir the coffee and condensed milk together thoroughly until fully combined. For hot Vietnamese coffee, drink immediately. For iced ca phe sua da, fill a separate tall glass with ice and pour the combined mixture over it.

Troubleshooting

Drip Stalls or Is Too Slow

Water sits in the phin and barely drips, or the brewing takes more than 8 minutes.

Fix: The grind is too fine or the press plate is overtightened. Use a coarser grind similar to sea salt. Loosen the press plate slightly. Ensure the filter holes are not blocked by fine sediment.

Coffee Drips Too Fast

The entire brew finishes in under 2 minutes and the coffee tastes weak and watery.

Fix: The grind is too coarse or the press plate is too loose. Tighten the press plate a quarter turn. Use a medium-coarse grind, not extra coarse. Increase the coffee dose to 20g if the result is still weak.

Too Bitter or Harsh

The finished drink is overwhelmingly bitter even after mixing with condensed milk.

Fix: Reduce brew time by loosening the press plate slightly. Use water just off the boil (95C) rather than rolling boil. Add an extra tablespoon of condensed milk to balance. If the beans themselves are very dark, consider a blend with some arabica for a smoother profile.

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