Authentic Vietnamese Coffee: A Step-by-Step Guide

Quick answer

• Use a Vietnamese coffee filter (phin).
• Start with dark roasted coffee, ideally Robusta.
• Grind your beans medium-coarse.
• Use sweetened condensed milk.
• Aim for a slow, steady drip.
• Don’t rush the process; savor it.

Who this is for

• Coffee lovers looking for a new brewing adventure.
• Anyone who enjoys rich, sweet, and bold coffee flavors.
• Home baristas wanting to master a unique brewing method.

What to check first

Brewer type and filter type

You’ll need a Vietnamese coffee filter, often called a phin. It’s usually a metal cylinder with a perforated plate and a press. Make sure yours is clean and all the parts fit together snugly.

To get started, you’ll need a Vietnamese coffee filter, often called a phin. This essential tool is key to authentic Vietnamese coffee.

Water quality and temperature

Use filtered water if your tap water tastes off. For Vietnamese coffee, you want your water hot, around 195-205°F. Too cool, and you won’t extract enough flavor. Too hot, and you risk scorching the grounds.

Grind size and coffee freshness

A medium-coarse grind works best. It should look like coarse sand. If it’s too fine, it’ll clog the filter. Too coarse, and the water will rush through, giving you weak coffee. Freshly ground beans are always the way to go for maximum flavor.

A medium-coarse grind works best. It should look like coarse sand, ensuring the water flows through at the right pace for optimal flavor.

Coffee-to-water ratio

A good starting point is about 2-3 tablespoons of coffee grounds per phin chamber. This can be adjusted to your taste. You’re aiming for a strong brew that can stand up to the condensed milk.

Cleanliness/descale status

A clean phin is crucial. Coffee oils build up and can make your brew taste bitter or stale. If your phin has been sitting around, give it a good scrub. If you’re using a drip machine for heating water, make sure it’s also descaled.

Step-by-step (brew workflow)

1. Prepare the phin: Place the bottom part of the phin on top of your glass.

• What good looks like: It sits steady, ready for grounds.
• Common mistake: Not having a sturdy glass, leading to spills. Use a thick glass or a mug.

2. Add coffee grounds: Spoon your medium-coarse coffee grounds into the phin chamber.

• What good looks like: The grounds fill about half to two-thirds of the chamber.
• Common mistake: Overfilling the phin, which can cause the press to get stuck or grounds to overflow.

3. Insert the press: Place the perforated insert (the press) on top of the coffee grounds. Gently twist it down until it just touches the grounds.

• What good looks like: The press is snug but not packed down hard.
• Common mistake: Pressing too hard. This compacts the grounds, hindering water flow and leading to over-extraction.

4. Add hot water (bloom): Pour just enough hot water (about 1 oz) over the press to wet all the grounds. Wait about 30 seconds.

• What good looks like: The grounds puff up slightly, releasing CO2. This is called blooming.
• Common mistake: Pouring too much water at once. This washes away the bloom and can lead to uneven extraction.

5. Fill the phin: Fill the phin chamber with hot water, up to the top.

• What good looks like: The water fills the chamber and starts to slowly drip through.
• Common mistake: Using water that’s too cool. It won’t extract properly.

6. Wait for the drip: Let the coffee brew. It should drip slowly, one drop at a time.

• What good looks like: A steady, slow drip. This can take 3-5 minutes.
• Common mistake: The coffee dripping too fast. This means your grind is too coarse or the press isn’t seated correctly.

7. Add condensed milk: While the coffee brews, add 1-2 tablespoons of sweetened condensed milk to the bottom of your glass. Adjust to your sweetness preference.

• What good looks like: The milk is ready to be mixed with the hot coffee.
• Common mistake: Adding milk before the coffee brews. It’ll just sit there.

8. Mix coffee and milk: Once the phin has finished dripping, remove the phin from the glass.

• What good looks like: The glass has a dark, concentrated coffee liquid sitting above the condensed milk.
• Common mistake: Removing the phin too early, resulting in weak coffee. Be patient.

9. Stir: Stir the hot coffee and condensed milk together until well combined.

• What good looks like: A uniform, rich brown color.
• Common mistake: Not stirring enough, leaving pockets of unmixed milk or coffee.

10. Serve: Add ice to a separate glass and pour the mixed coffee over it for an iced Vietnamese coffee (cà phê sữa đá). Or, enjoy it hot.

• What good looks like: A delicious, refreshing beverage ready to be enjoyed.
• Common mistake: Drinking it too fast. This is a drink to be savored.

Common mistakes (and what happens if you ignore them)

Mistake	What it causes	Fix
Using pre-ground coffee	Stale flavor, inconsistent extraction	Grind beans just before brewing.
Grind too fine	Clogged filter, bitter, over-extracted coffee	Use a coarser grind (medium-coarse).
Grind too coarse	Water rushes through, weak, under-extracted	Use a finer grind (medium-coarse).
Pressing down too hard	Water can’t flow, over-extraction, bitter	Gently twist the press until it just touches the grounds.
Water temperature too low	Under-extraction, weak flavor	Heat water to 195-205°F.
Water temperature too high	Scorched grounds, bitter taste	Let boiling water sit for 30-60 seconds before pouring.
Not blooming the coffee	Uneven extraction, less flavor	Pour a little water to wet grounds and wait 30 seconds.
Rushing the drip	Weak coffee, under-extraction	Be patient; a slow drip is key.
Using tap water with bad taste	Off-flavors in the coffee	Use filtered or bottled water.
Not cleaning the phin regularly	Bitter, stale coffee	Wash thoroughly after each use.
Using the wrong coffee type	Lacks authentic flavor	Opt for dark roasts, ideally Robusta or a blend.
Not stirring well	Inconsistent sweetness and flavor	Stir thoroughly until the coffee and milk are fully integrated.

Decision rules (simple if/then)

• If the coffee is dripping too fast, then the grind is likely too coarse because water is passing through too easily.
• If the coffee tastes bitter, then the grind might be too fine, the water too hot, or you pressed too hard because these lead to over-extraction.
• If the coffee tastes weak and sour, then the grind is probably too coarse, the water too cool, or you didn’t use enough coffee because these cause under-extraction.
• If the phin clogs and water won’t drip, then the grind is too fine because the small particles are blocking the holes.
• If you’re getting sediment in your cup, then your filter might be damaged or the grind is too fine and passing through the holes.
• If the coffee doesn’t taste bold enough, then try a slightly finer grind or more coffee grounds for the next brew.
• If the condensed milk is too sweet, then use less next time or try a coffee that’s brewed a bit stronger.
• If your brew tastes stale, then your coffee beans might be old or your phin needs a good cleaning.
• If the water doesn’t seem to extract much flavor, then make sure it’s hot enough (195-205°F).
• If you want a less intense coffee, then use a slightly coarser grind and let the water drip a bit faster.
• If you find the coffee too acidic, then try a darker roast or ensure your water is hot enough for proper extraction.

FAQ

What kind of coffee beans should I use for Vietnamese coffee?

Traditionally, dark-roasted Robusta beans or a blend with Robusta are used. They have a bold, strong flavor that stands up well to the sweetness of condensed milk.

Traditionally, dark-roasted Robusta beans or a blend with Robusta are used. They have a bold, strong flavor that stands up well to the sweetness of condensed milk.

How much condensed milk should I use?

This is totally up to your preference! Start with 1-2 tablespoons and adjust from there. Some people like it very sweet, others prefer a little less.

Can I use regular milk instead of condensed milk?

You can, but it won’t be authentic Vietnamese coffee. Sweetened condensed milk provides a unique richness and sweetness that’s characteristic of this brew.

Why is my coffee dripping so slowly?

A slow drip is actually good! It means your grind is likely just right and you’re getting a good extraction. If it stops completely, your grind might be too fine or the press is too tight.

How do I clean my Vietnamese coffee filter (phin)?

After brewing, disassemble the phin, discard the grounds, and wash all parts thoroughly with warm water and a mild soap. Make sure to remove any coffee oils.

Is it okay to use an electric drip coffee maker to heat my water?

Yes, as long as it heats water to the correct temperature (195-205°F). Just be sure the machine is clean and descaled for the best taste.

What’s the difference between hot and iced Vietnamese coffee?

Iced Vietnamese coffee (cà phê sữa đá) is made by brewing the coffee hot, mixing it with condensed milk, and then pouring it over ice. It’s a refreshing way to enjoy it, especially in warmer weather.

Can I make this coffee without a phin?

While a phin is the traditional and best tool, you could try a very slow pour-over method with a fine-mesh sieve, but it won’t yield the same concentrated result.

What this page does NOT cover (and where to go next)

• Specific brand recommendations for phins or coffee beans. (Look for specialty coffee shops or online retailers.)
• Detailed history of Vietnamese coffee culture. (Explore culinary and cultural resources.)
• Advanced espresso-based Vietnamese drinks. (Research barista guides or cafes specializing in these.)
• Roasting your own coffee beans. (Seek out home roasting guides.)